Waec Mathematics Past Questions and Answers

Question 126:

• WAEC 1990

An arc of length 22cm subtends an angle of θ at the center of the circle. What is the value of θ if the radius of the circle is 15cm?[Take π = 22/7]

A. 70^o
B. 84^o
C. 96^o
D. 156^o
E. 168^o

Question 127:

• WAEC 1990

Find the sum of the first five terms of the G.P 2,6, 18 ....

A. 484
B. 243
C. 242
D. 130
E. 121

Question 128:

• WAEC 1990

Let J be the set of positive integers, If H = {x: x∈J, x\(^2\) < 3 and x ≠ 0}, then

A. H = {1}
B. H is an infinite set
C. H = {0, 1, 2}
D. H = {}
E. J ≤ H

Question 129:

• WAEC 1990

In a class of 80 students, every students had to study economics or geography, or both economics and geography, if 65 students studied economics and 50 studied geography, how many studied both subjects?

A. 15
B. 30
C. 35
D. 45
E. 50

Question 130:

• WAEC 1990

The area shaded with horizontal lines is the solution set of the inequalities;

A. Y ≥ x, y + 3 ≥ 2x, x ≤ 3
B. Y ≤ x, y + 2x ≥ -3, x ≤ 3
C. Y ≤ -x, y + 2x ≤ 3, x ≥ -3
D. Y ≥ -x, y + 3 ≤ 2x, x ≥ -3
E. Y ≤ x, y ≤ 2x - 3, x ≥ 3