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GMAT Statistics and Probability — practice questions — page 2

Explore 198 free Statistics and Probability questions in GMAT Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Statistics and Probability questions and exercises with answers

Showing questions 31–60 of 198.

Outcomes that have the same chance of occurring are said to be:Read the answer and worked solution →If the probability of an event is 0.3, the probability of it not happening is:Read the answer and worked solution →The probability of getting a number greater than 6 in a single roll of a die is:Read the answer and worked solution →A fair coin is tossed. What is the probability of getting a head?Read the answer and worked solution →A fair die is rolled. What is the probability of getting an even number?Read the answer and worked solution →What can the probability of an event NOT be?Read the answer and worked solution →If the probability of rain tomorrow is 0.4, what is the probability that it will NOT rain?Read the answer and worked solution →A die is rolled once. What is the probability of getting a number greater than 4?Read the answer and worked solution →A card is drawn at random from a standard deck. What is the probability of getting a king?Read the answer and worked solution →A card is drawn from a deck. What is the probability of a red face card?Read the answer and worked solution →Two dice are rolled. What is the probability of getting a sum of 8?Read the answer and worked solution →A bag has 4 red, 5 green and 6 blue balls. A ball is drawn at random. P(green)?Read the answer and worked solution →Two coins are tossed. What is the probability of getting exactly one head?Read the answer and worked solution →A card is drawn from a deck. What is the probability that it is neither a king nor a queen?Read the answer and worked solution →A bag has 4 red and 6 blue balls. One ball is drawn at random. What is the probability that it is NOT red?Read the answer and worked solution →A box has cards numbered 1 to 20. One card is drawn. What is the probability that the number is a perfect square?Read the answer and worked solution →A die is rolled. What is the probability of getting a prime number?Read the answer and worked solution →A card is drawn from a deck. What is the probability of getting a heart or a king?Read the answer and worked solution →Two dice are rolled. What is the probability that the product of the numbers is 12?Read the answer and worked solution →A box has 100 bulbs of which 4 are defective. One bulb is chosen at random. What is the probability that it is not defective?Read the answer and worked solution →Probability of any event satisfies:Read the answer and worked solution →P(not A) equals:Read the answer and worked solution →CLASS10 · Mathematics · Probability — BasicsRead the answer and worked solution →The probability of an event $E$ is defined asRead the answer and worked solution →The probability of a sure (certain) event isRead the answer and worked solution →The probability of an impossible event isRead the answer and worked solution →The probability $P(E)$ of any event always liesRead the answer and worked solution →For an event $E$ and its complement $\overline{E}$ (not E),Read the answer and worked solution →The probability of getting a head when a fair coin is tossed once isRead the answer and worked solution →A die is rolled once. The probability of getting the number 3 isRead the answer and worked solution →

Worked practice questions

Outcomes that have the same chance of occurring are said to be:

  1. equally likely
  2. complementary
  3. impossible
  4. mutually exclusive
Show answer and solution

Correct answer: A. equally likely

Equally likely outcomes have equal chance.

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If the probability of an event is 0.3, the probability of it not happening is:

  1. 0
  2. 0.3
  3. 0.7
  4. 1.3
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Correct answer: C. 0.7

P(not E) = 1 − 0.3 = 0.7.

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The probability of getting a number greater than 6 in a single roll of a die is:

  1. 0
  2. 1
  3. 6
  4. 1/6
Show answer and solution

Correct answer: A. 0

A die shows only 1–6, so 'greater than 6' is impossible → 0.

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