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Quantitative Reasoning: Probability Flashcards

7 cards from real DAT 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: Probability flashcards as text

  1. A fair six-sided die is rolled once. What is the probability of rolling a number greater than 4?

    Answer: 1/3

    Outcomes greater than 4 are 5 and 6, so 2/6 = 1/3.

  2. A bag has 4 red and 6 blue marbles. What is the probability of drawing a red marble?

    Answer: 2/5

    There are 4 red out of 10 total, so 4/10 = 2/5.

  3. What is the probability of flipping a fair coin twice and getting two heads?

    Answer: 1/4

    Each flip is 1/2, so 1/2 × 1/2 = 1/4.

  4. A standard deck has 52 cards. What is the probability of drawing a king?

    Answer: 1/13

    There are 4 kings, so 4/52 = 1/13.

  5. If the probability of an event is 0.35, what is the probability it does NOT occur?

    Answer: 0.65

    The complement is 1 − 0.35 = 0.65.

  6. A spinner has 8 equal sections numbered 1–8. What is the probability of landing on an even number?

    Answer: 1/2

    Even numbers 2,4,6,8 make 4 of 8 sections, so 1/2.

  7. Two dice are rolled. What is the probability the sum equals 7?

    Answer: 1/6

    Six combinations sum to 7 out of 36 total, so 6/36 = 1/6.