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Year 11 Maths — Probability

Work out the probability of a simple event and of it not happening.

Name: ________________________

  1. 1.A fair die is rolled. What is the probability of getting an even number? Give your answer as a fraction.

  2. 2.A bag holds 3 red balls and 5 blue balls. One is taken out without looking. What is the probability it is blue? Give your answer as a fraction.

  3. 3.The probability that it rains tomorrow is 0.3. What is the probability that it does not rain?

  4. 4.A card is drawn from a full pack of 52. What is the probability it is a king? Give your answer as a fraction.

  5. 5.A fair coin is tossed. What is the probability of getting a head? Give your answer as a fraction.

  6. 6.Which of these could never be a probability?

    • a) 1.5
    • b) 0.25
    • c) 0
    • d) 1

  7. 7.What is the probability of an event that is certain to happen?

    • a) 0
    • b) 0.5
    • c) It depends on the event
    • d) 1

  8. 8.A fair die is rolled. What is the probability of getting a number greater than 4? Give your answer as a fraction.

Answer key — Year 11 Maths — Probability

  1. 1. 1/2
  2. 2. 5/8
  3. 3. 0.7
  4. 4. 1/13
  5. 5. 1/2
  6. 6. a) 1.5
  7. 7. d) 1
  8. 8. 1/3