Probability - Jamb Mathematics Past Questions and Answers

Question 56:

• JAMB 2003

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

Question 57:

• JAMB 2004

Some white balls put in a basket containing twelve red balls and sixteen black balls. If the probability of picking a white balls from the baskets is 3/7, how many white balls were introduced?

A. 12
B. 21
C. 28
D. 32

Question 58:

• JAMB 2004

An unbiased die is rolled 100 times and the outcome is tabulated above.
What is the probability of obtaining a 5?

A. 1/5
B. 1/2
C. 1/6
D. 1/4

Question 59:

• JAMB 2004

A container has 30 gold medals, 22 silver medals and 18 bronze medals. If one medals is selected at the random from the container, what is the probability that it is not a gold medal?

A. 9/35
B. 11/35
C. 4/7
D. 3/7

Question 60:

• JAMB 2005

A box contains 5 blue balls, 3 red balls and 2 white balls. Two balls are selected from the box with replacement. Find the probability of obtaining two blue or two red balls

A. 17/50
B. 3/25
C. 1/50
D. 3/250