GMAT Flashcards: Quant, Verbal & Data Insights Decisions
300 original flashcards for current-format GMAT Quant, Verbal, and Data Insights concepts, cues, and reusable decisions.
Sobre este mazo
GMAT Flashcards: Quant, Verbal & Data Insights Decisions
Build quick recall for the current GMAT with 300 original cards across Quantitative Reasoning, Verbal Reasoning, and Data Insights. The deck focuses on reusable concepts and decisions; full-length practice belongs in official or properly licensed question banks.
What the cards map
- Quant maps numeric forms, terms, rules, and formulas to their meaning, conditions, or use. Short scenarios ask for the operation, equation, or answer check that fits.
- Verbal maps passage and argument cues to purpose, scope, evidence, inference, reasoning flaws, and evaluation moves.
- Data Insights maps targets, constraints, source and display cues, metrics, and evidence states to the interpretation or decision they support. It covers Data Sufficiency, Multi-Source Reasoning, Table Analysis, Graphics Interpretation, and Two-Part Analysis.
Learning order
The mixed sequence keeps all three sections in rotation. Quant foundations come before algebra, models, and strategy checks; passage reading comes before argument evaluation; shared data literacy comes before the five Data Insights formats. Closely related prompts are spaced apart so one card does not cue the next.
Current-format boundary
This deck has no geometry lessons or formula drills, Sentence Correction, or the retired Integrated Reasoning section. It also excludes timing, scoring, test-center policy, full passages, large data sets, and response-pattern tricks.
Every card is an original compact concept or decision prompt. No official or competitor questions, answer choices, explanations, mark schemes, curriculum text, logos, or trade dress were copied or adapted. See the official GMAT exam content and Data Insights preparation guidance for the current exam boundary.
This is an independent, unofficial study resource. It is not affiliated with, endorsed by, or sponsored by the Graduate Management Admission Council (GMAC). GMAT is used only to identify the exam.
Tarjetas de este mazo
Tarjeta 1
Pregunta
Which numerator-and-denominator operation creates an equivalent fraction?
Respuesta
Multiply or divide the numerator and denominator by the same nonzero number. The fraction's value stays unchanged.
Tarjeta 2
Pregunta
What does data sufficiency ask you to determine?
Respuesta
Whether the information guarantees one answer. You usually don’t need to calculate that answer.
Tarjeta 3
Pregunta
How do you form a passage's main idea?
Respuesta
Combine the passage's central topic with its main claim about that topic. The answer should cover the whole passage at the right level.
Tarjeta 4
Pregunta
What does multiplying a decimal by 10ⁿ do when n is a positive integer?
Respuesta
It moves the decimal point n places to the right. Dividing by 10ⁿ moves it n places left.
Tarjeta 5
Pregunta
What makes information sufficient for a value question?
Respuesta
It forces exactly one value for the target. Different values that satisfy all conditions make it insufficient.
Tarjeta 6
Pregunta
How do you identify the passage's primary purpose?
Respuesta
Name what the author is doing with the topic: explaining, comparing, challenging, defending, or proposing. Keep content and action together.
Tarjeta 7
Pregunta
How do you find p percent of a quantity q?
Respuesta
Compute (p/100) × q. Translate “of” as multiplication.
Tarjeta 8
Pregunta
How can two valid cases prove insufficiency?
Respuesta
Make the cases produce different answers to the question. One clean counterexample pair is enough.
Tarjeta 9
Pregunta
How do you determine a paragraph's role?
Respuesta
Connect the paragraph to what comes before and after it. Decide whether it introduces, supports, qualifies, contrasts, applies, or concludes the larger discussion.
Tarjeta 10
Pregunta
A total of 45 is split in the ratio 2:3. What are the two parts?
Respuesta
18 and 27. The five ratio units are worth 45 ÷ 5 = 9 each.
Tarjeta 11
Pregunta
Why can an integer restriction change sufficiency?
Respuesta
It removes noninteger possibilities. A range containing many real numbers may contain only one integer.
Tarjeta 12
Pregunta
When is a product of signed factors negative?
Respuesta
Provided no factor is zero, an odd number of negative factors gives a negative product, while an even number gives a positive product. If any factor is zero, the product is zero.
Tarjeta 13
Pregunta
How should two data-sufficiency statements be tested initially?
Respuesta
Test each statement independently against the stem. Do not carry information from one statement into the other.
Tarjeta 14
Pregunta
What makes an integer greater than 1 prime?
Respuesta
It has exactly two positive divisors: 1 and itself.
Tarjeta 15
Pregunta
What should you do first on a detail question?
Respuesta
Return to the relevant lines and read their local context. Memory tends to preserve the topic while blurring qualifications.
Tarjeta 16
Pregunta
What is the divisibility rule for 2?
Respuesta
The last digit must be even: 0, 2, 4, 6, or 8.
Tarjeta 17
Pregunta
How do you test whether a fact is relevant?
Respuesta
Connect it to the requested target. A true fact that does not narrow the target adds no decision value.
Tarjeta 18
Pregunta
How far may a reading inference go beyond the text?
Respuesta
Only as far as the text strongly supports. Prefer the smallest justified step and reject claims needing outside knowledge.
Tarjeta 19
Pregunta
Why is prime factorization useful in GMAT arithmetic?
Respuesta
It exposes divisibility, factors, greatest common factors, least common multiples, and perfect powers.
Tarjeta 20
Pregunta
What must happen before quantities with different units are combined?
Respuesta
First confirm that their dimensions are compatible, then convert them to a common unit. Keep the unit attached through the calculation to catch mismatches.
Tarjeta 21
Pregunta
How do you apply a passage principle to a new case?
Respuesta
Extract the principle's required conditions, then test whether the new case has them. Surface similarity isn't enough.
Tarjeta 22
Pregunta
Which relationship connects distance, rate, and time?
Respuesta
Distance = rate × time. Rearrange only after the units are compatible.
Tarjeta 23
Pregunta
How do you find a least common multiple from prime factorizations?
Respuesta
Take every prime that appears, using the largest exponent present.
Tarjeta 24
Pregunta
How do you multiply powers with the same base?
Respuesta
Add the exponents: aᵐ × aⁿ = aᵐ⁺ⁿ.
Tarjeta 25
Pregunta
How is a weighted average computed?
Respuesta
Divide the total weighted value by the total weight. For groups, use group size as the weight unless another weight is given.
Tarjeta 26
Pregunta
What should a quick passage map record?
Respuesta
Each paragraph's role and major viewpoint, plus the passage's overall direction. Record structure, not a sentence-by-sentence summary.
Tarjeta 27
Pregunta
What does the principal square root symbol √x return?
Respuesta
For real x ≥ 0, it is the nonnegative number whose square is x. For example, √9 = 3, not ±3.
Tarjeta 28
Pregunta
When can bounds replace exact arithmetic?
Respuesta
When the bounds separate the viable decisions. Stop once every value in the interval leads to the same choice.
Tarjeta 29
Pregunta
How do you keep viewpoints separate?
Respuesta
Attach each claim to its speaker: author, critic, researcher, or group. Track agreement, disagreement, and any later qualification.
Tarjeta 30
Pregunta
How do “sum,” “product,” and “quotient” translate into algebra?
Respuesta
They mean addition, multiplication, and division, respectively.
Tarjeta 31
Pregunta
How do you reduce a fraction to lowest terms?
Respuesta
Divide the numerator and denominator by their greatest common factor.
Tarjeta 32
Pregunta
What evidence should determine the author's tone?
Respuesta
Evaluative words, qualifications, and the treatment of competing views. Topic alone doesn't establish approval, concern, or skepticism.
Tarjeta 33
Pregunta
When should rounding usually occur?
Respuesta
At the end, unless estimation already settles the decision. Early rounding can move a result across a cutoff.
Tarjeta 34
Pregunta
How do you convert a terminating decimal to a fraction?
Respuesta
Write the digits over the matching power of 10, then reduce. For example, 0.375 = 375/1000 = 3/8.
Tarjeta 35
Pregunta
When should you stop calculating in a sufficiency problem?
Respuesta
As soon as uniqueness is proved or disproved. More arithmetic cannot change the sufficiency decision.
Tarjeta 36
Pregunta
How do you spot an out-of-scope answer?
Respuesta
It introduces a person, period, cause, or consequence the passage doesn't address. Being reasonable doesn't make it textually supported.
Tarjeta 37
Pregunta
What is the percent-change formula?
Respuesta
For original > 0, percent change = (new − original) / original × 100%. Percent change from zero is undefined; negative baselines require context-specific interpretation.
Tarjeta 38
Pregunta
What makes information sufficient for a yes-or-no question?
Respuesta
It forces the same yes-or-no answer in every valid case. The underlying value may still vary.
Tarjeta 39
Pregunta
What preserves a ratio when its quantities are scaled?
Respuesta
Multiplying or dividing both terms by the same nonzero factor preserves the ratio.
Tarjeta 40
Pregunta
How do you reject a main-idea answer with the wrong scope?
Respuesta
Compare it with the whole passage. A detail-only answer is too narrow; a claim extending beyond the passage is too broad.
Tarjeta 41
Pregunta
Why should you track whether a variable is positive, negative, or zero?
Respuesta
Sign controls valid cases and operations. Squaring can hide sign, and division requires a nonzero denominator.
Tarjeta 42
Pregunta
How do you simplify subtraction of a negative number?
Respuesta
Change it to addition: a − (−b) = a + b.
Tarjeta 43
Pregunta
Whose purpose matters in a primary-purpose question?
Respuesta
The passage author's purpose. A theory or researcher may be described at length without representing what the author ultimately wants to do.
Tarjeta 44
Pregunta
When is the on-screen calculator most useful?
Respuesta
For tedious arithmetic after the setup is clear. It does not replace choosing the right relationship or denominator.
Tarjeta 45
Pregunta
In Data Sufficiency, what stem information applies when testing either statement?
Respuesta
Everything in the question stem. Stem facts remain active for each statement and for the combination.
Tarjeta 46
Pregunta
What is the divisibility rule for 3?
Respuesta
The sum of the digits must be divisible by 3.
Tarjeta 47
Pregunta
What does a transition paragraph often do?
Respuesta
It closes one line of thought and sets up the next. Its role depends on both sides, not only on its first sentence.
Tarjeta 48
Pregunta
When is a proxy measure useful?
Respuesta
When evidence shows it reliably tracks the target for the intended decision. Correlation may support prediction, but it proves neither causation nor suitability on its own.
Tarjeta 49
Pregunta
How do you find a greatest common factor from prime factorizations?
Respuesta
Take each shared prime to the smaller exponent.
Tarjeta 50
Pregunta
What is the arithmetic mean?
Respuesta
The sum of the values divided by the number of values.
Tarjeta 51
Pregunta
What units should a rate have?
Respuesta
One quantity per another, such as kilometers per hour. The denominator tells you what the rate is measured against.
Tarjeta 52
Pregunta
How do you divide powers with the same nonzero base?
Respuesta
Subtract the exponents: aᵐ ÷ aⁿ = aᵐ⁻ⁿ.
Tarjeta 53
Pregunta
What makes a paraphrase faithful to a passage detail?
Respuesta
It preserves the original meaning, scope, and certainty in different words. Shared keywords alone don't make it accurate.
Tarjeta 54
Pregunta
How do you recover a total from an average?
Respuesta
Total = average × number of values.
Tarjeta 55
Pregunta
How do you choose between two plausible reading inferences?
Respuesta
Choose the one with the tighter textual chain and fewer assumptions. Plausibility in the real world is secondary.
Tarjeta 56
Pregunta
What quick check can catch a calculator-entry error?
Respuesta
Estimate the order of magnitude and direction first. An exact result far outside that range deserves another look.
Tarjeta 57
Pregunta
How do you simplify a square root with a perfect-square factor?
Respuesta
Factor out the perfect square. For example, √72 = √(36 × 2) = 6√2.
Tarjeta 58
Pregunta
What makes a new example parallel to one in the passage?
Respuesta
The same logical relationship. Match cause, contrast, exception, or function rather than shared subject matter.
Tarjeta 59
Pregunta
When can work rates be added?
Respuesta
Add the stated constant rates when the workers operate simultaneously without interfering with one another. At 1/4 and 1/6 job per hour, together they complete 5/12 job per hour.
Tarjeta 60
Pregunta
What is the denominator in a percent comparison?
Respuesta
The stated reference value. “A as a percent of B” means A divided by B, then multiplied by 100.
Tarjeta 61
Pregunta
How do you translate “5 less than x”?
Respuesta
x − 5. The phrase “less than” reverses the spoken order.
Tarjeta 62
Pregunta
In Data Sufficiency, what should you check before testing values?
Respuesta
The full domain. Honor stated restrictions and implicit ones such as positive lengths or nonzero divisors before judging sufficiency.
Tarjeta 63
Pregunta
How do you add fractions with different denominators?
Respuesta
Rewrite them with a common denominator, then add the numerators. For example, 2/3 + 1/4 = 8/12 + 3/12 = 11/12.
Tarjeta 64
Pregunta
How do you distinguish description from argument in a passage?
Respuesta
Description presents what happened or what a view says; argument gives reasons to accept, reject, or revise a claim.
Tarjeta 65
Pregunta
How should you compare decimals with different lengths?
Respuesta
Append trailing zeros and compare place by place. For example, compare 0.47 with 0.4700, which are equal.
Tarjeta 66
Pregunta
How should combined statements be evaluated?
Respuesta
Intersect their constraints with the stem. The combination is sufficient only if every remaining case gives one answer.
Tarjeta 67
Pregunta
How do you find common ground between two viewpoints?
Respuesta
Look for the narrow claim both accept, even if they disagree about its cause, importance, or implications.
Tarjeta 68
Pregunta
How do you solve a proportion such as a/b = c/d?
Respuesta
Cross-multiply to get ad = bc, provided b and d are nonzero.
Tarjeta 69
Pregunta
How is average speed computed?
Respuesta
Total distance divided by total time. It is not usually the simple mean of the segment speeds.
Tarjeta 70
Pregunta
What does |x| represent?
Respuesta
The nonnegative distance from x to 0 on the number line.
Tarjeta 71
Pregunta
Why are strongly emotional tone descriptions often wrong?
Respuesta
They overstate measured academic prose. Match the answer's intensity to the author's actual language.
Tarjeta 72
Pregunta
What is the divisibility rule for 4?
Respuesta
The number formed by the last two digits must be divisible by 4.
Tarjeta 73
Pregunta
Can the ordinary percent-change formula be applied directly when the original value is zero or negative?
Respuesta
No. The ordinary GMAT rule assumes original > 0. Change from zero is undefined, and a negative baseline requires context-specific interpretation.
Tarjeta 74
Pregunta
Why can a true statement still be a wrong answer?
Respuesta
It may not answer the question asked. Check the task—main idea, detail, inference, role, or purpose—before checking truth.
Tarjeta 75
Pregunta
When must a weighted average lie between its component values?
Respuesta
When every weight is nonnegative and the total weight is positive. The average then lies between the smallest and largest component values.
Tarjeta 76
Pregunta
How do you express an integer n divided by d with remainder r?
Respuesta
n = dq + r, where q is an integer and 0 ≤ r < d for positive d.
Tarjeta 77
Pregunta
What does an inequality usually provide?
Respuesta
A range, not a unique value. It can still be sufficient if the question asks whether a threshold is crossed.
Tarjeta 78
Pregunta
How should you handle an EXCEPT detail prompt?
Respuesta
Verify four statements against the passage and select the one that isn't supported. Keep the reversed task visible while checking each choice.
Tarjeta 79
Pregunta
How should you set up a unit conversion?
Respuesta
Multiply by a conversion factor equal to 1, placing units so the unwanted unit cancels.
Tarjeta 80
Pregunta
Can two individually insufficient statements remain insufficient together?
Respuesta
Yes. They may repeat the same limitation or still leave multiple valid answers.
Tarjeta 81
Pregunta
For a positive base, how do you simplify a power raised to another power?
Respuesta
Multiply the exponents: (aᵐ)ⁿ = a^(mn).
Tarjeta 82
Pregunta
When can you infer that an author accepts a claim?
Respuesta
When the author endorses it directly or relies on it without distancing language. Merely reporting another person's view isn't endorsement.
Tarjeta 83
Pregunta
How should successive percentage changes be combined?
Respuesta
Multiply their factors. A 10% rise followed by a 10% fall gives 1.10 × 0.90 = 0.99, a 1% net fall.
Tarjeta 84
Pregunta
What are compatible numbers in estimation?
Respuesta
Nearby numbers chosen to make mental arithmetic easy, such as 203 ÷ 9.9 ≈ 200 ÷ 10 = 20.
Tarjeta 85
Pregunta
Which constraints are easy to overlook in a word problem?
Respuesta
Countability, positivity, distinctness, and capacity limits. Translate each noun and rule into a usable constraint.
Tarjeta 86
Pregunta
How do you state the exact disagreement between two viewpoints?
Respuesta
Identify one claim that one side accepts and the other rejects. Don't substitute a topic that only one side discusses.
Tarjeta 87
Pregunta
How do you represent three consecutive integers?
Respuesta
n, n + 1, and n + 2 for an integer n.
Tarjeta 88
Pregunta
How do percentage points differ from percent change?
Respuesta
Percentage points are the direct difference between percentages. Moving from 20% to 25% is 5 points and a 25% relative increase.
Tarjeta 89
Pregunta
What is a reversed-relationship trap?
Respuesta
It swaps cause and effect, support and conclusion, or the positions of two viewpoints while reusing familiar passage language.
Tarjeta 90
Pregunta
How do you multiply two fractions?
Respuesta
Multiply numerator by numerator and denominator by denominator, canceling common factors when convenient.
Tarjeta 91
Pregunta
How do direct and inverse proportion differ?
Respuesta
Direct:
y = kx; inverse:y = k/xforx ≠ 0.Tarjeta 92
Pregunta
How do you recover an original value after a percentage increase?
Respuesta
Divide the new value by the growth factor. After a 20% increase, original = new ÷ 1.20.
Tarjeta 93
Pregunta
When should absolute wording raise suspicion?
Respuesta
When the passage is qualified. Words such as always, never, entirely, and impossible require equally strong textual support.
Tarjeta 94
Pregunta
What should you identify first in Data Sufficiency?
Respuesta
The exact target and answer type. Decide whether the stem asks for a value, a comparison, or a yes-or-no result.
Tarjeta 95
Pregunta
What ending makes an integer divisible by 5 or by 10?
Respuesta
A last digit of 0 or 5 gives divisibility by 5; a last digit of 0 gives divisibility by 10.
Tarjeta 96
Pregunta
How should a Data Sufficiency condition be handled?
Respuesta
Translate it into a precise constraint before testing sufficiency. Keep it separate from the conclusion you want.
Tarjeta 97
Pregunta
How do you reject a half-right answer?
Respuesta
Test every part of it. One accurate clause can't rescue a second clause that distorts the passage or exceeds its scope.
Tarjeta 98
Pregunta
When you convert a positive measurement to a smaller linear unit, what happens to its numerical value?
Respuesta
It increases. Multiply by the number of smaller units in one larger unit.
Tarjeta 99
Pregunta
DS example: Is x > 5? Statement: x > 3. Is the statement sufficient?
Respuesta
No. Both x = 4 and x = 6 satisfy the statement, but they answer the stem differently.
Tarjeta 100
Pregunta
What is a⁰ when a is nonzero?
Respuesta
- The nonzero-base condition matters because 0⁰ is not assigned this rule.
Tarjeta 101
Pregunta
Which claim is the argument trying to establish?
Respuesta
The main conclusion. Find the claim supported by the other statements, then check that it answers the argument's central issue.
Tarjeta 102
Pregunta
When should the two statements be combined?
Respuesta
When neither statement is sufficient alone. Use both constraints at once and test the remaining possibilities.
Tarjeta 103
Pregunta
A positive number rounds to 8.2 to the nearest tenth. What interval contains it?
Respuesta
8.15 ≤ x < 8.25. The lower endpoint rounds up to 8.2; the upper endpoint rounds to 8.3.
Tarjeta 104
Pregunta
What should you check when the conclusion changes populations?
Respuesta
Whether the evidence applies to the new population. Results from volunteers, specialists, or one age group may not transfer to everyone.
Tarjeta 105
Pregunta
How should test values be chosen in Data Sufficiency?
Respuesta
Choose valid values that probe boundaries, signs, and distinct outcomes. Random easy values can miss the deciding case.
Tarjeta 106
Pregunta
How do you translate “A is 30% more than B”?
Respuesta
A = 1.30B. The percentage is based on B.
Tarjeta 107
Pregunta
When can one equation involving two variables be sufficient for a target?
Respuesta
When every valid solution gives the same target value, even if neither variable is unique. For example, x + y = 10 is sufficient to determine x + y.
Tarjeta 108
Pregunta
What does a correlation establish by itself?
Respuesta
Only that two things vary together. It doesn't establish which one causes the other or whether a third factor causes both.
Tarjeta 109
Pregunta
How do you divide by a nonzero fraction?
Respuesta
Multiply by its reciprocal. For example, 3/5 ÷ 2/7 = 3/5 × 7/2.
Tarjeta 110
Pregunta
Why is a ratio often insufficient for an absolute value?
Respuesta
A ratio fixes relative size but usually leaves the scale free. Many proportional pairs can share the same ratio.
Tarjeta 111
Pregunta
What is the divisibility rule for 9?
Respuesta
The sum of the digits must be divisible by 9.
Tarjeta 112
Pregunta
What matters most when applying a sample result to a population?
Respuesta
Representativeness. The sample must resemble the target population on traits that could affect the result.
Tarjeta 113
Pregunta
What should you check after solving a squared equation?
Respuesta
Check every allowed root. If positive and negative roots produce different target answers, the information is insufficient.
Tarjeta 114
Pregunta
What does a negative exponent mean?
Respuesta
It takes the reciprocal: a⁻ⁿ = 1/aⁿ for nonzero a.
Tarjeta 115
Pregunta
Which baseline makes a comparison informative?
Respuesta
The baseline relevant to the claim. Compare the outcome with what would otherwise have happened, not merely with an unrelated earlier figure.
Tarjeta 116
Pregunta
What risk appears when an equation factors into multiple branches?
Respuesta
Each branch may create valid cases. Test all branches against the stem before deciding sufficiency.
Tarjeta 117
Pregunta
How can you compare two positive fractions quickly?
Respuesta
Compare their cross-products. For a/b and c/d with positive denominators, compare ad with bc.
Tarjeta 118
Pregunta
What may be assumed from a Data Sufficiency diagram?
Respuesta
Only marked or stated facts. Do not infer scale, equality, perpendicularity, or midpoint status from appearance.
Tarjeta 119
Pregunta
What multiplier represents a p percent increase or decrease?
Respuesta
Use 1 + p/100 for an increase and 1 − p/100 for a decrease.
Tarjeta 120
Pregunta
Which statements count as evidence?
Respuesta
The statements offered as reasons to accept another claim. Evidence may be factual or assumed for the argument, even if it isn't proven in real life.
Tarjeta 121
Pregunta
Can a mean determine an individual observation?
Respuesta
Not by itself. A mean fixes the total, but different sets can have that total unless more constraints apply.
Tarjeta 122
Pregunta
What weakens a move from past evidence to a present claim?
Respuesta
A relevant change over time. New technology, prices, rules, or behavior can make the earlier evidence a poor guide.
Tarjeta 123
Pregunta
A value becomes 96 after a 20% increase. What was the original value?
Respuesta
- Divide the final value by the growth multiplier: 96 ÷ 1.2 = 80.
Tarjeta 124
Pregunta
How do extreme valid cases help in Data Sufficiency?
Respuesta
They expose whether the target can change. Test the smallest, largest, or boundary cases allowed by the conditions.
Tarjeta 125
Pregunta
How do you test for reverse causation?
Respuesta
Ask whether the alleged effect could instead cause the alleged cause. Productive teams may meet more because they are productive, not the reverse.
Tarjeta 126
Pregunta
Must a sufficient statement make every variable unique?
Respuesta
No. It only needs to make the requested target unique, even if other variables remain undetermined.
Tarjeta 127
Pregunta
A price rises 20% and then falls 20%. Does it return to its original value?
Respuesta
No. The multipliers give 1.20 × 0.80 = 0.96, so the final price is 4% below the original.
Tarjeta 128
Pregunta
Why can a voluntary survey be biased?
Respuesta
People who choose to respond may differ from those who don't. Strong opinions or extra interest can distort the sample.
Tarjeta 129
Pregunta
How do you expand a(b + c)?
Respuesta
ab + ac. The outside factor multiplies every term inside the parentheses.
Tarjeta 130
Pregunta
What should the final Data Sufficiency decision describe?
Respuesta
Which information set guarantees an answer. It should not report the target’s numerical value.
Tarjeta 131
Pregunta
What is the goal when solving a linear equation?
Respuesta
Isolate the variable by applying equivalent operations to both sides.
Tarjeta 132
Pregunta
DS example: Is integer n even? Statement: n = 7. Is the statement sufficient?
Respuesta
Yes. It guarantees one answer—no. A statement can be sufficient even when that answer is negative.
Tarjeta 133
Pregunta
When must an inequality sign reverse?
Respuesta
When both sides are multiplied or divided by a negative number.
Tarjeta 134
Pregunta
What must be checked before comparing two groups?
Respuesta
Whether they differ in other relevant ways. Age, experience, starting level, or incentives may explain the outcome instead.
Tarjeta 135
Pregunta
When is substitution preferable to elimination in a two-equation system?
Respuesta
Use substitution when one variable is already isolated or easy to isolate; use elimination when coefficients cancel easily.
Tarjeta 136
Pregunta
What should you build before analyzing Multi-Source Reasoning material?
Respuesta
A quick source map. Note what each tab or document contains, who produced it, and the relevant date or scope.
Tarjeta 137
Pregunta
How do you separate background from evidence?
Respuesta
Ask whether the statement supports a claim. Background sets context; evidence does logical work in moving the argument toward a conclusion.
Tarjeta 138
Pregunta
Which algebraic terms can be combined?
Respuesta
Terms with the same variable part and exponents. For example, 3x² and −5x² combine, but 3x² and 3x do not.
Tarjeta 139
Pregunta
When should you read the Multi-Source Reasoning question?
Respuesta
Before a deep read of every source. The question tells you which details deserve attention.
Tarjeta 140
Pregunta
What is a reliable first step for an equation containing several fractions?
Respuesta
Multiply every term by the least common denominator, then solve the simpler equation.
Tarjeta 141
Pregunta
Why does source provenance matter?
Respuesta
It defines what a claim can support. An internal forecast and an audited result do not carry the same evidentiary weight.
Tarjeta 142
Pregunta
What should you test when evidence comes from a different setting?
Respuesta
Whether the settings differ in a way that affects the result. A finding from one market, school, or climate may not carry over unchanged.
Tarjeta 143
Pregunta
What does an “and” compound inequality require?
Respuesta
The overlap of both solution sets. A value must satisfy both conditions.
Tarjeta 144
Pregunta
What should you compare before combining claims from two sources?
Respuesta
Their population, period, units, and definitions. Matching labels can hide different scopes.
Tarjeta 145
Pregunta
How can a third factor undermine a causal claim?
Respuesta
It may explain both events, so their correlation no longer establishes a direct causal link by itself. Hot weather can raise both cold-drink sales and pool attendance.
Tarjeta 146
Pregunta
What do one, zero, or infinitely many solutions mean for two linear equations in two variables?
Respuesta
The lines intersect once, are parallel and distinct, or are the same line, respectively.
Tarjeta 147
Pregunta
How should records from separate sources be linked?
Respuesta
Use a shared key with the same meaning in both sources, such as product code and month. Do not join on a vague label alone.
Tarjeta 148
Pregunta
How do you factor 6x + 9?
Respuesta
3(2x + 3). Pull out the greatest common factor.
Tarjeta 149
Pregunta
When does nonresponse threaten a survey result?
Respuesta
When nonrespondents may answer differently from respondents. A high response count doesn't fix a systematic missing group.
Tarjeta 150
Pregunta
What is the first step when two sources seem inconsistent?
Respuesta
Compare definitions, dates, units, and aggregation levels. Many apparent conflicts come from mismatched frames.
300 tarjetas
GMAT Flashcards: Quant, Verbal & Data Insights Decisions
Estudia este mazo gratisFlashcards se abrirá para que puedas empezar a estudiar.
Tarjeta 151
Pregunta
When can you use the zero-product property?
Respuesta
After rewriting a product equal to zero. If (x − 2)(x + 5) = 0, then x = 2 or x = −5.
Tarjeta 152
Pregunta
How does an inference differ from a stated fact?
Respuesta
A fact appears directly in a source; an inference must follow from the sources without an extra assumption.
Tarjeta 153
Pregunta
Does a higher percentage by itself prove a higher count?
Respuesta
No. The underlying totals matter. Twenty percent of 1,000 is more than fifty percent of 100.
Tarjeta 154
Pregunta
What does an “or” compound inequality require?
Respuesta
The union of the solution sets. A value may satisfy either condition or both.
Tarjeta 155
Pregunta
What does a blank or omitted value establish?
Respuesta
Only that the value is not provided. It does not establish zero, no change, or failure.
Tarjeta 156
Pregunta
How do you recognize an intermediate conclusion?
Respuesta
It is supported by one claim and supports another. It acts as both a conclusion and a premise in the same argument.
Tarjeta 157
Pregunta
What should you do before writing equations for a two-quantity word problem?
Respuesta
Define each variable with its unit, then translate one independent relationship per equation.
Tarjeta 158
Pregunta
Why should cross-source events be placed in time order?
Respuesta
Sequence separates prior conditions from later outcomes and prevents using future information as an earlier cause.
Tarjeta 159
Pregunta
When should candidate solutions be checked in the original equation?
Respuesta
Always after a step that may introduce solutions, especially squaring both sides or clearing variable denominators.
Tarjeta 160
Pregunta
How can switching from one measured outcome to another create a gap?
Respuesta
Evidence about one metric may not support a conclusion about another. More website visits, for example, don't by themselves mean more sales.
Tarjeta 161
Pregunta
What makes a source relevant to a claim?
Respuesta
It supplies evidence for a required link in the claim. Related background alone is not enough.
Tarjeta 162
Pregunta
How do you solve a factored polynomial inequality reliably?
Respuesta
Find the zeros, split the number line into intervals, and test each interval's sign. Include a zero only when equality is allowed.
Tarjeta 163
Pregunta
Does happening first prove causation?
Respuesta
No. The timing may fit a causal story, but coincidence or another cause can still explain the later event.
Tarjeta 164
Pregunta
How can you spot an unsupported cross-source conclusion?
Respuesta
Identify the bridge between evidence and conclusion. If the sources never establish that bridge, the conclusion needs an assumption.
Tarjeta 165
Pregunta
What do 0 = 0 and 0 = 5 mean after simplifying an equation?
Respuesta
0 = 0 means every allowed value is a solution; 0 = 5 means there is no solution.
Tarjeta 166
Pregunta
What should you verify before comparing figures from different sources?
Respuesta
Common units and denominators. Convert first, then compare the same quantity on the same basis.
Tarjeta 167
Pregunta
How do you interpret |x − a| < r when r is positive?
Respuesta
x is within r units of a: a − r < x < a + r.
Tarjeta 168
Pregunta
What can a larger sample improve?
Respuesta
Precision, if the sampling method is sound. A huge biased sample can still give a confidently wrong picture of the population.
Tarjeta 169
Pregunta
How should a cross-source recommendation be evaluated?
Respuesta
Apply the stated decision rule to the combined evidence. Do not substitute a personal preference for the rule.
Tarjeta 170
Pregunta
If a worker finishes one job in t hours, what is the worker's hourly rate?
Respuesta
1/t of the job per hour.
Tarjeta 171
Pregunta
What can an average hide?
Respuesta
The distribution. Two groups can share an average while differing sharply in range, concentration, or the number of extreme values.
Tarjeta 172
Pregunta
What should you confirm before submitting a Multi-Source Reasoning answer?
Respuesta
That every required part is supported by the correct source and scope. One unsupported component can invalidate the whole decision.
Tarjeta 173
Pregunta
How do you find the amount of a pure component in a mixture?
Respuesta
Concentration × total mixture amount. A 30% solution with volume 20 contains 0.30 × 20 = 6 units of the component.
Tarjeta 174
Pregunta
What role does a concession usually play?
Respuesta
It acknowledges a point that weighs against the conclusion, then answers that point or limits its relevance. Don't mistake the conceded claim for the argument's main conclusion.
Tarjeta 175
Pregunta
When can an apparent cross-source discrepancy be resolved?
Respuesta
When a stated difference in scope or method explains both figures. If no bridge is given, keep the conflict open.
Tarjeta 176
Pregunta
What is the two-set overlap formula?
Respuesta
In A or B = in A + in B − in both. Subtract the overlap because it was counted twice.
Tarjeta 177
Pregunta
What should you identify first in Table Analysis?
Respuesta
The row unit, column definitions, and any notes. This establishes what one record and each value represent.
Tarjeta 178
Pregunta
What is the fundamental counting principle?
Respuesta
Multiply the choices at successive stages when each stage has a fixed number of available choices.
Tarjeta 179
Pregunta
Why distinguish relative change from absolute change?
Respuesta
Relative change is the percentage change; absolute change is the amount added or lost. A 50% rise from 2 adds 1, while a 10% rise from 1,000 adds 100.
Tarjeta 180
Pregunta
How should a table filter be translated?
Respuesta
Turn it into an exact inclusion rule. Apply every condition before counting or comparing rows.
Tarjeta 181
Pregunta
For equally likely outcomes, what is the basic probability formula?
Respuesta
Favorable outcomes divided by total possible outcomes.
Tarjeta 182
Pregunta
What makes a proposed causal mechanism useful?
Respuesta
It explains how the cause could produce the effect. A plausible, evidence-backed mechanism strengthens the causal link.
Tarjeta 183
Pregunta
How do you find the median?
Respuesta
Order the values and take the middle value; for an even count, average the two middle values.
Tarjeta 184
Pregunta
How should numeric values be sorted?
Respuesta
By numerical value, not digit order. For example, 12 comes after 9 in ascending order.
Tarjeta 185
Pregunta
What is missed when evidence includes only successful cases?
Respuesta
The failures. Studying only surviving firms can make a strategy look safer or more effective than it is.
Tarjeta 186
Pregunta
Two machines have stated constant rates of 1/3 and 1/5 job per hour and operate simultaneously without interference. May their rates be added?
Respuesta
Yes. The stated rates are constant and the machines do not interfere, so their combined rate is 1/3 + 1/5 = 8/15 job per hour.
Tarjeta 187
Pregunta
How should a table ratio be built when filters are involved?
Respuesta
Derive the numerator and denominator separately from the question, then apply each filter only where it is relevant. Do not automatically filter both quantities or default to all rows.
Tarjeta 188
Pregunta
What quantity is conserved when two solutions are mixed without loss?
Respuesta
The amount of the pure component. Set the sum of the starting component amounts equal to the final component amount.
Tarjeta 189
Pregunta
When may table rows be added directly?
Respuesta
Only when they are disjoint parts of the same measure and use compatible units. Overlapping groups would be double-counted.
Tarjeta 190
Pregunta
What does n! mean for a positive integer n?
Respuesta
The product of the positive integers from 1 through n.
Tarjeta 191
Pregunta
Where is the argument's logical gap?
Respuesta
Between the evidence and the conclusion. State what must connect them without merely repeating either side.
Tarjeta 192
Pregunta
How do you find the number in neither of two sets?
Respuesta
Subtract the number in the union from the total population.
Tarjeta 193
Pregunta
How should rates from table groups be combined?
Respuesta
Divide the total numerator by the total denominator. Weight a group rate by its group size only when that size is the rate's denominator.
Tarjeta 194
Pregunta
What is wrong with moving from some cases to all cases?
Respuesta
The conclusion is broader than the evidence. Evidence that some members have a trait doesn't show that every member does.
Tarjeta 195
Pregunta
When should you use a permutation?
Respuesta
When selecting and arranging items and order matters. The number of ordered selections of r from n distinct items is n!/(n − r)!.
Tarjeta 196
Pregunta
Why does table granularity matter?
Respuesta
A row-level fact may disappear or change after aggregation. Match the claim to the table’s level of detail.
Tarjeta 197
Pregunta
How do you find the probability that an event does not occur?
Respuesta
1 − P(event). This is often the quickest route for “at least one” questions.
Tarjeta 198
Pregunta
Why does a comparable control group help test causation?
Respuesta
It shows what happened without the suspected cause. If the groups differ mainly in that factor, the result is harder to explain another way.
Tarjeta 199
Pregunta
How should missing table entries be treated?
Respuesta
As unknown unless the notes define another meaning. Exclude or include them only as the question directs.
Tarjeta 200
Pregunta
What is the mode of a data set?
Respuesta
A mode is any value with the greatest frequency. Under the no-mode convention, there is no mode only when at least two distinct values all have equal frequency.
Tarjeta 201
Pregunta
What makes a table comparison valid?
Respuesta
The values must have compatible measures, units, periods, populations, and definitions. Normalize only validly convertible differences; reject differences in population, period, or definition that cannot be reconciled.
Tarjeta 202
Pregunta
What should you check when a prediction extends a past pattern?
Respuesta
Whether the conditions behind the past pattern will continue. A trend alone doesn't show that its causes will remain in place.
Tarjeta 203
Pregunta
How should a drain or other undoing process enter a work-rate equation?
Respuesta
As a negative rate. Add productive rates and subtract rates that reverse the work.
Tarjeta 204
Pregunta
How can you avoid losing your place while scanning a table?
Respuesta
Evaluate one condition at a time and mark qualifying rows mentally or on the scratchpad. Count only after the final filter.
Tarjeta 205
Pregunta
Can evidence that an outcome is possible show it is likely?
Respuesta
No. Possibility only shows that an outcome can occur; probability requires evidence about how likely it is.
Tarjeta 206
Pregunta
What correction is needed when counting the union of three sets?
Respuesta
Add the three individual counts, subtract all three pairwise overlaps, then add the triple overlap back once.
Tarjeta 207
Pregunta
When does a filtered table support a decision?
Respuesta
When the qualifying rows satisfy the stated rule. Keep filtering, calculation, and decision as separate steps.
Tarjeta 208
Pregunta
When should you use a combination?
Respuesta
When selecting items and order does not matter. The number of selections of r from n distinct items is n!/[r!(n − r)!].
Tarjeta 209
Pregunta
What must support a recommendation?
Respuesta
A link from the proposed action to the stated goal. The argument also needs the action to be feasible and free of costs that defeat the goal.
Tarjeta 210
Pregunta
How do AND and OR change a table filter?
Respuesta
AND requires every condition; OR requires at least one. Parenthesize mixed rules before scanning rows.
Tarjeta 211
Pregunta
How do you find the probability that independent events both occur?
Respuesta
Multiply their probabilities: P(A and B) = P(A) × P(B).
Tarjeta 212
Pregunta
What can make an alphabetical sort misleading?
Respuesta
Labels may contain categories or embedded numbers. Confirm whether the column is text, numeric, or chronological.
Tarjeta 213
Pregunta
What kind of fact most directly strengthens an argument?
Respuesta
A fact that supports the missing link between evidence and conclusion. Merely repeating a premise adds little.
Tarjeta 214
Pregunta
What is the range of a data set?
Respuesta
Maximum value minus minimum value.
Tarjeta 215
Pregunta
What should you check at a filter cutoff?
Respuesta
Whether the boundary is inclusive. “At least 40” includes 40; “more than 40” does not.
Tarjeta 216
Pregunta
A train covers 150 miles in 3 hours at a constant rate. What is its rate?
Respuesta
50 miles per hour. Rearrange distance = rate × time to get rate = 150 ÷ 3.
Tarjeta 217
Pregunta
What is the most direct way to weaken an argument?
Respuesta
Undermine a necessary assumption connecting the evidence to the conclusion. The premises can remain true while the conclusion loses support.
Tarjeta 218
Pregunta
What does a tie in the sorted column imply?
Respuesta
The tied rows share rank on that measure. Their display order does not create a performance difference.
Tarjeta 219
Pregunta
How do you identify a useful evaluation question?
Respuesta
Test whether opposite answers would push the argument in opposite directions. If both answers leave the conclusion unchanged, the question isn't useful.
Tarjeta 220
Pregunta
What should you identify first in Graphics Interpretation?
Respuesta
The chart type and what each visual encoding represents. Bars, lines, areas, and points support different readings.
Tarjeta 221
Pregunta
How do repeated identical items affect arrangement counts?
Respuesta
For n total items, divide n! by the factorial of each repeated count. Identical items do not create new arrangements when swapped.
Tarjeta 222
Pregunta
What should you read before estimating a plotted value?
Respuesta
Both axis labels, units, and category order. Position has meaning only after the axes are understood.
Tarjeta 223
Pregunta
How do you test whether a statement is a necessary assumption?
Respuesta
Negate it. If that negation seriously damages the argument, the original statement was necessary.
Tarjeta 224
Pregunta
How do you find the probability that one of two mutually exclusive events occurs?
Respuesta
Add their probabilities: P(A or B) = P(A) + P(B). Their overlap is zero.
Tarjeta 225
Pregunta
What should you verify in a chart legend?
Respuesta
Which color, shape, or line maps to each series. Similar styling can otherwise swap the groups in your interpretation.
Tarjeta 226
Pregunta
What does standard deviation measure?
Respuesta
How spread out values are around the mean. Greater dispersion means a larger standard deviation.
Tarjeta 227
Pregunta
What standard should an inference meet?
Respuesta
It must follow from the given statements, without extra assumptions. Choose the modest claim the evidence guarantees.
Tarjeta 228
Pregunta
What does a segment’s share depend on?
Respuesta
The correct whole. A category’s share of one region may differ from its share of the full dataset.
Tarjeta 229
Pregunta
For motion along the same line, when do you add or subtract two speeds to get relative speed?
Respuesta
Add the speeds for opposite directions; subtract the smaller speed from the larger for the same direction.
Tarjeta 230
Pregunta
What must a paradox explanation accomplish?
Respuesta
Make both surprising facts plausible at the same time. Rejecting either stated fact doesn't resolve the tension.
Tarjeta 231
Pregunta
How is a segment in a stacked bar measured?
Respuesta
Subtract its lower boundary from its upper boundary. The upper endpoint alone is cumulative, not the segment value.
Tarjeta 232
Pregunta
Eight students average 70 and twelve students average 80. What is the combined mean?
Respuesta
- The group sizes are the weights: (8 × 70 + 12 × 80) ÷ 20 = 76.
Tarjeta 233
Pregunta
What is the difference between a graph’s level and its rate of change?
Respuesta
Level is the plotted value; rate of change is the slope. A high line can still be falling.
Tarjeta 234
Pregunta
How should you describe a statement's role in an argument?
Respuesta
Describe what it does, not just what it says. It may support the conclusion, present an objection, answer that objection, or illustrate a principle.
Tarjeta 235
Pregunta
What is P(A given B)?
Respuesta
P(A and B) / P(B), provided P(B) > 0. Restrict the sample space to outcomes in B.
Tarjeta 236
Pregunta
How should slope be compared across a graph?
Respuesta
Use change in vertical value divided by change in horizontal value. Visual steepness is reliable only on the same scales.
Tarjeta 237
Pregunta
A driver covers equal distances at 30 mph and 60 mph. Is the average speed 45 mph?
Respuesta
No. Using 60 miles for each leg gives 120 miles in 3 hours, so the average speed is 40 mph.
Tarjeta 238
Pregunta
What should you identify first when evaluating a plan?
Respuesta
The plan's exact goal and success measure. A proposal can produce benefits yet still fail its stated objective.
Tarjeta 239
Pregunta
What does a trend in a scatterplot establish?
Respuesta
An association in the displayed data. It does not by itself establish causation or predict every individual point.
Tarjeta 240
Pregunta
How can you strengthen a causal explanation?
Respuesta
Rule out a credible alternative cause, support the proposed mechanism, or show the effect changes when the proposed cause changes.
Tarjeta 241
Pregunta
How can an outlier affect a graphical trend?
Respuesta
It can pull a summary line or average away from the main cluster. Check whether the claim concerns all points or the typical pattern.
Tarjeta 242
Pregunta
Why do probabilities usually change when sampling without replacement?
Respuesta
The sample space changes after each draw. Update both the favorable count and the total before multiplying conditional probabilities.
Tarjeta 243
Pregunta
One value in an n-value set increases by d. How does the mean change?
Respuesta
It increases by d/n because the total rises by d while the count stays fixed.
Tarjeta 244
Pregunta
When does a counterexample weaken a claim?
Respuesta
When the claim requires the counterexample not to exist. One genuine exception can defeat an absolute claim, but may barely affect a modest one.
Tarjeta 245
Pregunta
What is the parity of the sum of two odd integers?
Respuesta
Even. Each odd integer is one more than an even integer, so the two extra ones add to 2.
Tarjeta 246
Pregunta
What can an aggregate graph hide?
Respuesta
Differences among subgroups or periods. A stable total can coexist with large offsetting changes inside it.
Tarjeta 247
Pregunta
When is interpolation reasonable on a graph?
Respuesta
When the graph implies continuity between nearby points. Do not interpolate across separate categories.
Tarjeta 248
Pregunta
What makes information relevant to evaluating an argument?
Respuesta
It bears on the uncertain link the conclusion depends on. Interesting facts about the topic may still be logically irrelevant.
Tarjeta 249
Pregunta
How precise should a value read from a graph be?
Respuesta
Only as precise as the scale supports. Use a defensible interval when the mark falls between ticks.
Tarjeta 250
Pregunta
Must a necessary assumption prove the conclusion?
Respuesta
No. It only has to be required for the argument to work; it need not be enough to establish the conclusion on its own.
Tarjeta 251
Pregunta
How do you multiply positive numbers written in scientific notation?
Respuesta
Multiply the coefficients, add the powers of 10, then adjust the coefficient to be at least 1 and less than 10.
Tarjeta 252
Pregunta
How should a graph-based decision be made?
Respuesta
Translate the visual into values or bounds, then apply the stated rule. Do not decide from appearance alone.
Tarjeta 253
Pregunta
When is backsolving from answer choices especially useful?
Respuesta
When the choices are concrete values and direct algebra is slower than testing them in the original conditions.
Tarjeta 254
Pregunta
How can axis scale distort a visual impression?
Respuesta
Unequal intervals or a truncated baseline can magnify or compress differences. Use tick values, not apparent distance alone.
Tarjeta 255
Pregunta
When should you combine two statements for an inference?
Respuesta
When they share a term or relationship that creates a guaranteed consequence. Don't combine them through an unstated causal or statistical link.
Tarjeta 256
Pregunta
When is a product of integers odd?
Respuesta
Only when every factor is odd. One even factor makes the entire product even.
Tarjeta 257
Pregunta
What often resolves two apparently conflicting results?
Respuesta
A hidden difference in group, time, measurement, or conditions. The results may describe different slices of the situation.
Tarjeta 258
Pregunta
How should equal distances on a logarithmic axis be interpreted?
Respuesta
As equal multiplicative changes, not equal absolute changes. Read the labeled values before comparing gaps.
Tarjeta 259
Pregunta
Why start with a middle answer choice when backsolving ordered options?
Respuesta
Its result often eliminates half the choices at once when the relationship is monotonic.
Tarjeta 260
Pregunta
What makes a Two-Part Analysis response complete?
Respuesta
Both selections must satisfy their own column prompts under the same stem. Treat the pair as one submitted response.
Tarjeta 261
Pregunta
What is an analogy doing when it supports a claim?
Respuesta
It argues that because two cases share relevant features, a result or principle from one likely applies to the other.
Tarjeta 262
Pregunta
How do you represent three consecutive odd integers?
Respuesta
n, n + 2, and n + 4, where n is an odd integer.
Tarjeta 263
Pregunta
What should you identify before solving Two-Part Analysis?
Respuesta
The role of each column. One may ask for a condition while the other asks for a consequence or decision.
Tarjeta 264
Pregunta
What values should you test first in a claim about an unspecified number?
Respuesta
Test allowed categories that may behave differently: positive, negative, zero, fractional, and boundary values.
Tarjeta 265
Pregunta
How can an unchanged bottleneck defeat a plan?
Respuesta
Improving a nonlimiting step won't improve the final outcome if another constraint still controls it. Faster ordering doesn't help when production is already full.
Tarjeta 266
Pregunta
How does the shared stem affect the two parts?
Respuesta
Its definitions and constraints apply to both. Keep them fixed while testing each column’s requirement.
Tarjeta 267
Pregunta
How do you count the positive divisors of an integer greater than 1 from its prime factorization?
Respuesta
Add 1 to each prime exponent, then multiply those results.
Tarjeta 268
Pregunta
In Two-Part Analysis, must the two selected entries be the same?
Respuesta
In the current format, the two selected entries may be the same or different. A linkage in the stem determines whether you must reason through them jointly, not whether their values match.
Tarjeta 269
Pregunta
What makes evidence for a general claim strong?
Respuesta
It should be relevant and reliable and, if case-based, come from representative cases. More evidence isn't automatically better evidence.
Tarjeta 270
Pregunta
How do you factor a difference of squares?
Respuesta
Use x² − y² = (x − y)(x + y).
Tarjeta 271
Pregunta
When should the two Two-Part Analysis selections be solved together?
Respuesta
When one shared relationship constrains both. Test candidate pairs against that relationship instead of solving isolated fragments.
Tarjeta 272
Pregunta
How can one counterexample evaluate a universal claim?
Respuesta
One valid counterexample disproves a claim that is supposed to hold for every allowed value.
Tarjeta 273
Pregunta
How does an alternative explanation weaken a conclusion?
Respuesta
It shows that the evidence can be true without the proposed explanation being true. The alternative must account for the same result.
Tarjeta 274
Pregunta
In Two-Part Analysis, how can one column help solve the other?
Respuesta
A valid selection can narrow the remaining candidates when the parts share a constraint. Recheck the final pair in both columns.
Tarjeta 275
Pregunta
How do you test whether x² + bx + c factors into integer binomials?
Respuesta
Look for integers r and s with r + s = b and rs = c. If they exist, the factorization is (x + r)(x + s).
Tarjeta 276
Pregunta
Which unknown should you evaluate first in a plan argument?
Respuesta
A condition that could make the plan achieve or miss its goal. Focus on feasibility, response, costs, and side effects tied to that goal.
Tarjeta 277
Pregunta
How should a trade-off between two measures be evaluated?
Respuesta
Apply the stated priorities or limits. An option is better only relative to the rule, not because one measure is largest.
Tarjeta 278
Pregunta
How can estimation screen answer choices before exact calculation?
Respuesta
Approximate the expression's magnitude, then eliminate choices that are far too large or too small.
Tarjeta 279
Pregunta
In a constrained-decision Two-Part Analysis problem, what should you check before comparing candidates?
Respuesta
Check every hard constraint first. Discard any option that breaks a required limit, then compare only the feasible candidates.
Tarjeta 280
Pregunta
What does a defensive assumption do?
Respuesta
It rules out a threat that would break the argument. For example, a revenue plan may assume that its added costs won't exceed the new revenue.
Tarjeta 281
Pregunta
What restriction applies when a variable appears in a denominator?
Respuesta
Exclude every value that makes the denominator zero.
Tarjeta 282
Pregunta
How does an objective differ from a constraint?
Respuesta
A constraint determines what is allowed; an objective ranks the allowed options. Apply them in that order.
Tarjeta 283
Pregunta
Which quick checks catch many Quant answer errors?
Respuesta
Check the sign, units, allowed range, and rough size against the question's conditions.
Tarjeta 284
Pregunta
What inference is safe from a statement about most members?
Respuesta
More than half have the stated trait. You can't infer that all do, that any particular member does, or that most have another trait.
Tarjeta 285
Pregunta
How should a two-part threshold rule be handled?
Respuesta
Translate each threshold with the correct inequality, including its boundary. Then test both selected values against it.
Tarjeta 286
Pregunta
Where can one negative sign appear in a fraction without changing its value?
Respuesta
Before the fraction, in the numerator, or in the denominator: −(a/b) = (−a)/b = a/(−b), provided b ≠ 0.
Tarjeta 287
Pregunta
How does an argument choose between competing explanations?
Respuesta
It presents evidence that one explanation handles better than the others, often by ruling out a rival prediction.
Tarjeta 288
Pregunta
What is an efficient way to handle two linked algebraic targets?
Respuesta
Express both in terms of one variable or invariant. Evaluate candidate values only after the relationship is clear.
Tarjeta 289
Pregunta
How do you solve x² = c over the real numbers?
Respuesta
If c > 0, x = ±√c; if c = 0, x = 0; if c < 0, there is no real solution.
Tarjeta 290
Pregunta
What should you check when two selected quantities form a ratio?
Respuesta
Order and scale. The ratio A:B is not interchangeable with B:A, and proportional pairs may all fit.
Tarjeta 291
Pregunta
How does a positive proper fraction compare with 1?
Respuesta
It is less than 1 because its numerator is smaller than its denominator.
Tarjeta 292
Pregunta
Which side effects matter when evaluating a plan?
Respuesta
Effects that change the plan's net result or work against its goal. A small unrelated inconvenience usually doesn't matter.
Tarjeta 293
Pregunta
How should a two-part logical claim be tested?
Respuesta
Separate the condition from the conclusion, then test whether each selected statement performs the requested role.
Tarjeta 294
Pregunta
What is the solution pattern for |x| = a over the real numbers?
Respuesta
If a > 0, x = ±a; if a = 0, x = 0; if a < 0, there is no real solution.
Tarjeta 295
Pregunta
What unit check belongs in a two-part quantitative answer?
Respuesta
Confirm that each selection has the unit requested by its column. Linked values may require different conversions.
Tarjeta 296
Pregunta
Why does user response matter to a plan?
Respuesta
The plan may depend on people adopting, following, or not avoiding it. Availability alone doesn't guarantee the needed behavior.
Tarjeta 297
Pregunta
A response rate rises from 40% to 50%. What are the percentage-point change and the relative percent increase?
Respuesta
The increase is 10 percentage points and 25% relative to the original rate: (50 − 40) ÷ 40 = 0.25.
Tarjeta 298
Pregunta
What is the final check for Two-Part Analysis?
Respuesta
Read each column prompt with its chosen entry, then verify that the pair is jointly consistent with the stem.
Tarjeta 299
Pregunta
For real x and y, what two linear cases are equivalent to x² = y²?
Respuesta
x = y or x = −y.
Tarjeta 300
Pregunta
How should benefits and costs be compared in a plan argument?
Respuesta
By their net effect on the stated goal. A plan can create the intended benefit but still fail if its relevant costs are larger.
300 tarjetas
GMAT Flashcards: Quant, Verbal & Data Insights Decisions
Flashcards se abrirá para que puedas empezar a estudiar.