Waec Mathematics 1991 Past Questions and Answers

Question 41:

• WAEC 1991

A box contains 2 white and 3 blue identical marbles. If two marbles are picked at random, one after the other without replacement, what is the probability of picking two marbles of different colors?

A. 2/3
B. 3/5
C. 2/5
D. 7/20
E. 3/10

Question 42:

• WAEC 1991

Mrs. Jones is expecting a baby. The probability that it will be a boy is 1/2 and probability that the baby will have blue eyes is 1/4. What is the probability that she will have a blue-eyed boy?

A. 1/8
B. ¹/₄
C. 3/8
D. ¹/₂
E. 3/4

Question 43:

• WAEC 1991

Which of the following about a rhombus may not be true?

A. The diagonals are equal
B. The diagonals bisect the angles through which they pass
C. The diagonals bisect each other
D. The adjacent sides are equal
E. Opposite angles are equal

Question 44:

• WAEC 1991

The angles of a pentagon are x°, 2x°, (x + 60)°, (x + 10)°, (x -10)°. Find the value of x.

A. 40
B. 60
C. 75
D. 80
E. 90

Question 45:

• WAEC 1991

In the diagram above, ∠PTQ = ∠URP = 25° and XPU = 4URP. Calculate ∠USQ.

A. 100^o
B. 120^o
C. 125^o
D. 130^o
E. 150^o