Chapter 14: Probability
One-Hour Practice Test
Practice Test
Answer all questions. Show necessary steps wherever required.
Section A
6 × 1 = 6 Marks1. State the probability of a sure event. (1 Mark)
2. State the probability of an impossible event. (1 Mark)
3. Find the probability of getting a head when a fair coin is tossed once. (1 Mark)
4. Find the probability of getting an even number when a fair die is thrown once. (1 Mark)
5. State the range of probability of an event A. (1 Mark)
6. If P(A) = 0.3, find P(A'). (1 Mark)
Section B
3 × 2 = 6 Marks7. Find the probability of drawing a king from a standard deck of 52 playing cards. (2 Marks)
8. A fair die is thrown once. Find the probability of getting a number greater than 4. (2 Marks)
9. If P(A) = 0.6, P(B) = 0.5 and P(A ∩ B) = 0.2, find P(A ∪ B). (2 Marks)
Section C
3 × 3 = 9 Marks10. Two fair coins are tossed simultaneously. Find the probability of getting exactly one head. (3 Marks)
11. If events A and B are mutually exclusive, P(A) = 0.35 and P(B) = 0.25, find P(A ∪ B). (3 Marks)
12. A bag contains 5 red, 3 blue and 2 green balls. One ball is selected at random. Find the probability that the selected ball is not blue. (3 Marks)
Section D
1 × 4 = 4 Marks13. Two fair dice are thrown simultaneously. Find the probability that the sum is either 8 or at least 10. (4 Marks)