Probability - Jamb Mathematics Past Questions and Answers

Question 31:

• JAMB 1990

Two numbers are removed at random from the numbers 1, 2, 3 and 4. What is the probability that the sum of the numbers removed is even?

A. \(\frac{2}{3}\)
B. \(\frac{2}{15}\)
C. \(\frac{1}{2}\)
D. \(\frac{1}{4}\)

Question 32:

• JAMB 1990

Find the probability that a number selected at random from 41 to 56 is a multiply of 9

A. \(\frac{1}{8}\)
B. \(\frac{2}{15}\)
C. \(\frac{3}{16}\)
D. \(\frac{7}{8}\)

Question 33:

• JAMB 1991

A crate of soft drinks contains 10 bottles of Coca-cola, 8 of Fanta and 6 of sprite. If one bottle is selected at random, what is the probability that it is NOT a Cocacola bottle?

A. \(\frac{5}{12}\)
B. \(\frac{1}{3}\)
C. \(\frac{3}{4}\)
D. \(\frac{7}{12}\)

Question 34:

• JAMB 1992

Two perfect dice are thrown together, Determine the probability of obtaining a total score of 8

A. \(\frac{1}{12}\)
B. \(\frac{5}{36}\)
C. \(\frac{1}{6}\)
D. \(\frac{7}{36}\)

Question 35:

• JAMB 1992

The probability of an event P is \(\frac{3}{4}\) while that of another event Q is \(\frac{1}{6}\). If the probability of both P and Q is \(\frac{1}{2}\). What is the probability of either P or Q.

A. \(\frac{1}{96}\)
B. \(\frac{1}{8}\)
C. \(\frac{5}{6}\)
D. \(\frac{11}{12}\)