STATISTICS - Jamb Mathematics Past Questions and Answers

Question 131:

• JAMB 1988

If two dice are thrown together, what is the probability of obtaining at least a score of 10?

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

Question 132:

• JAMB 1989

In preparing rice cutlets, a cook used 75g of rice, 40g of margarine, 105g of meat and 20g of bread crumbs. Find the angle of the sector which represents meat in pie chart

A. 30^o
B. 60^o
C. 112.5^o
D. 157.5^o

Question 133:

• JAMB 1989

In a family of 21 people, the average age is 14years. If the age of the grandfather is not counted, the average age drops to 12 years. What is the age of the grandfather?

A. 35 years
B. 40 years
C. 42 years
D. 54 years

Question 134:

• JAMB 1989

If n is the median and m is the mode of the following set of numbers, 2.4, 2.1, 1.6, 2.6, 2.6, 3.7, 2.1, 2.6, then (n, m) is

A. (2.6, 2.6)
B. (2.5, 2.6)
C. (2.6, 2.5)
D. (2.5, 2.1)

Question 135:

• JAMB 1990

4, 16, 30, 20, 10, 14 and 26 are represented on a pie chart. Find the sum of the angles of the bisectors representing all numbers equals to or greater than 16

A. 48^o
B. 84^o
C. 92^o
D. 276^o