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Quantitative Reasoning Flashcards

7 cards from real GRE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Quantitative Reasoning flashcards as text

  1. If the area of a square is 64, what is the length of its diagonal?

    Answer: 8√2

    The side is 8, and the diagonal of a square is side × √2 = 8√2.

  2. A number n is divisible by both 6 and 8. What is the smallest possible positive value of n?

    Answer: 24

    The least common multiple of 6 and 8 is 24.

  3. If f(x) = 2x² - 3, what is f(4)?

    Answer: 29

    f(4) = 2(16) - 3 = 32 - 3 = 29.

  4. A data set has values 4, 8, 8, 10, 20. What is the mode?

    Answer: 8

    The value 8 appears most frequently, so it is the mode.

  5. Quantity A: 2^10. Quantity B: 10^3. Which is greater?

    Answer: Quantity A is greater

    2^10 = 1024, which is greater than 10^3 = 1000.

  6. If 30% of a number is 45, what is the number?

    Answer: 150

    The number is 45 ÷ 0.30 = 150.

  7. What is the value of (x + 3)(x - 3) when x = 5?

    Answer: 16

    This equals x² - 9 = 25 - 9 = 16.