Probability Jamb Mathematics Past Questions
Question 1
If a fair coin is tossed 3 times, what is the probability of getting at least two heads?
- A. \(\frac{2}{3}\)
- B. \(\frac{4}{5}\)
- C. \(\frac{2}{5}\)
- D. \(\frac{1}{2}\)
Question 2
X and Y are two events. The probability of X or Y is 0.7 and that of X is 0.4. If X and Y are independent, find the probability of Y.
- A. 0.30
- B. 0.50
- C. 0.57
- D. 1.80
Question 3
If U = {x : x is an integer and 1 ≤ x ≤ 20}
E1 = {x : x is a multiple of 3}
E2 = {x : x is a multiple of 4}
and an integer is picked at random from U, find the probability that it is not in E2
- A. 3/4
- B. 3/10
- C. 1/4
- D. 1/20
Question 4
Teams P and Q are involved in a game of football. What is the probability that the game ends in a draw?
- A. 2/3
- B. 1/2
- C. 1/3
- D. 1/4
Question 5
The probability of a student passing any exam is 2/3. If the student takes three exams, what is the probability that he will not pass any of them?
- A. 2/3
- B. 4/9
- C. 8/27
- D. 1/27
