2001 - WAEC Mathematics Past Questions and Answers - page 4
31
If the probability that an event will occur is p and the probability that it will not occur is q, which of the following is true?
A
p-q=1
B
q-p=0
C
p+q=1
D
p+q=0
32
What is the range of their age?
A
14 years
B
20 years
C
30.5 years
D
31 years
33
What is the mode?
A
22.5 years
B
23.0 years
C
24.0 years
D
27.5 years
34
How many students are there in the group?
A
25
B
30
C
52
D
55
35
Which of the following is not the the size of an exterior angle of a regular polygon?
A
15o
B
18o
C
20o
D
21o
36
In the diagram, PQR is a triangle.|PQ| = |PR|, |PS| = |SQ| and PRS = 50°. What is the size of ∠PSQ?
A
75o
B
80o
C
85o
D
95o
37
PQRS is a rhombus of side 16cm. The diagonal |QS| = 20cm. Calculate, correct to the nearest degree, ∠PQR
A
51o
B
64o
C
77o
D
103o
38
In the diagram, PQ is a diameter of the circle and ∠PRS = 58°. Find ∠STQ.
A
29o
B
32o
C
42o
D
53o
39
A chord of length 30cm is 8cm away from the center of the circle. What is the radius of the circle. What is the perimeter of the sector? Take \(\pi =\frac{22}{7}\)
A
16cm
B
17cm
C
18cm
D
20cm
40
A sector of a circle radius 14 cm subtends an angle 135° at the center of the circle. What is the perimeter of the sector? Take \(\pi = \frac{22}{7}\)
A
47cm
B
61cm
C
88cm
D
231cm
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