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1995 - WAEC Mathematics Past Questions and Answers - page 5

41

Without using tables, find the value of \(\frac{\sin 20°}{\cos 70°} + \frac{\cos 25°}{\sin 65°}\)

A
2
B
1
C
o
D
-1
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42

In the diagram above, ∠PRQ = 90°, ∠QPR = 30° and /PQ/ = 10 cm. Find y.

A
6cm
B
5cm
C
4cm
D
3cm
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43

The bearing of two points Q and R from a point P are 030° and 120° respectively, lf /PQ/ = 12 m and /PR/ = 5 m, find the distance QR.

A
13m
B
11m
C
9m
D
7m
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44

What is the mode of the numbers 8, 10, 9, 9, 10, 8, 11, 8, 10, 9, 8 and 14?

A
8
B
9
C
10
D
11
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45

The mean of 20 observations in an experiment is 4, lf the observed largest value is 23, find the mean of the remaining observations.

A
4
B
3
C
2.85
D
2.60
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46

Find the median of the following numbers 2.64, 2.50, 2.72, 2.91 and 2.35.

A
2.91
B
2.72
C
2.64
D
2.50
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47

Two fair dice are tossed together once. Find the probability that the sum of the outcome is at least 10.

A
1/12
B
5/ 36
C
1/ 6
D
1/4
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48

From a box containing 2 red, 6 white and 5 black balls, a ball is randomly selected. What is the probability that the selected ball is black?

A
2/13
B
5/13
C
5/11
D
5/6
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