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Thursday, 11 June 2026
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Mathematics Past Questions and Answers

Topic: Probability

Jamb Mathematics Questions - Probability

Question 26:
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
View Answer & Explanation
Question 27:
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
View Answer & Explanation
Question 28:
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
View Answer & Explanation
Question 29:
A bag contains 5 blacks balls and 3 red balls. Two balls are picked at random without replacement. What is the probability that a black and red balls are picked?
  • A 15/28
  • B 13/28
  • C 5/14
  • D 3/14
View Answer & Explanation
Question 30:
The result of tossing a fair die 120 times is summarized above. Find the value of x
  • A 19
  • B 20
  • C 21
  • D 22
View Answer & Explanation