1992 - WAEC Mathematics Past Questions and Answers - page 4
31
A ladder leans against a vertical wall at an angle
60° to the wall, if the foot of the ladder is 5 metres
away from the wall, calculate the length of the
ladder.
A
5√3m/3
B
5m
C
10√3m/3
D
5√3m
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32
A cliff on the bank of a river is 300 metres
high. if the angle of depression of a point on the
opposite side of the river is 60° find the width of
the river.
high. if the angle of depression of a point on the
opposite side of the river is 60° find the width of
the river.
A
100m
B
75√3m
C
100√3m
D
200√3m
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33
Points X and Y are respectively 12m Nonh and
5m of point Z. Calculate XY
5m of point Z. Calculate XY
A
7m
B
12m
C
13m
D
17m
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34
Find the median of the following set of scores:
65, 72, 55, 48, 78
65, 72, 55, 48, 78
A
55
B
60
C
63.5
D
65
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35
The data above shows the frequency distribution
of marks scored by a group of students in a class
test.
How many students took the test?
A
13
B
14
C
15
D
18
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36
The data below shows the frequency distribution
of marks scored by a group of students in a class
test.
What is the modal score
A
2
B
3
C
4
D
5
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37
The data below shows the frequency distribution
of marks scored by a group of students in a class
test.
Find the mean mark.
A
1
B
1.3
C
2
D
3
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38
A group of students measured a certain angle
(to the nearest degree) and obtained the following
results: 75o, 76o, 72o, 73o, 74o, 79o, 72o, 72o, 77o,
72o, 71o, 70o, 78o, 73o. Find the mode
(to the nearest degree) and obtained the following
results: 75o, 76o, 72o, 73o, 74o, 79o, 72o, 72o, 77o,
72o, 71o, 70o, 78o, 73o. Find the mode
A
79o
B
78o
C
74o
D
73o
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39
| Marks | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| No of students | 1 | 3 | 2 | 0 | 1 | 6 | 1 | 0 | 1 | 0 |
The table above shows the scores of 15 students in a Physics test.
How many students scored at least 5?
A
1
B
6
C
8
D
9
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40
A number is chosen at random from the set (1 ,2,3
....,9, 10). What is the probability that the number
is greater than or equal to 7?
....,9, 10). What is the probability that the number
is greater than or equal to 7?
A
1/10
B
3/10
C
2/5
D
3/5
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