Mathematics Past Questions

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Past Questions

1,853 questions
Question 1 of 20 1,853 total questions
Question 841
waec 1991
No. of chairs 1 2 3 4 5 6 7
Frequency 2 7 5 4 9 7 6

Find the median of the distribution

A9
B6.5
C5
D4.5
E4
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Question 842
waec 1991
Find the mode of the distribution
A40
B9
C7
D5
E2
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Question 843
waec 1991

Find the mean of the distribution

A3.5
B4.0
C4.4
D5.0
E5
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Question 844
waec 1991

The mean of 30 observations recorded in an experiment is 5. lf the observed largest value of 34 is deleted, find the mean of the remaining observations

A5
B4
C3.9
D3.4
E3.0
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Question 845
waec 1991

Which of the following is not a measure of dispersion?

AMode
BMean deviation
CRange
Dinterquartile range
EStandard deviation
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Question 846
waec 1991

In a class of 80 students, every student had to study Economics or Geography or both Economics and Geography. lf 65 students studied Economics and 50 studied Geography, how many studied both subjects?

A15
B30
C35
D45
E50
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Question 847
waec 1991

P = {2, 1,3, 9, 1/2}; Q = {1,21/2,3, 7} and R = {5, 4, 21/2}. Find P∩Q∩R

A(21/2)
B∅
C(1, 3, 7)
D(4)
E(5,7,9)
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Question 848
waec 1991

P={2, 1,3, 9, 1/2}; Q = {1,21/2,3, 7} and R = {5, 4, 21/2}. Find P∪Q∪R

A(21/2)
B(1, 9)
C(1, 2, 3, 4, 5, 6, 7)
D(5, 4, 21/2)
E(1/2, 1, 2, 21/2, 3, 4, 5, 7, 9)
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Question 849
waec 1991

In the diagram above, ATR is a tangent at the point T to the circle center O, if ∠TOB = 145°, find ∠TAO

A20o
B35o
C45o
D55o
E65o
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Question 850
waec 1991
The angle of elevation of the top of a tree 39m
away from a point on the ground is 30o. Find the height of the tree
A39√3m
B13√3m
C13/\(\sqrt{3}\)m
D13/3\(\sqrt{3}\)m
E\(\sqrt{3}\)/13m
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Question 851
waec 1991
From the top of a cliff, the angle of depression of
a boat on the sea is 60o, if the top of the cliff is
25m above the sea level, calculate the horizontal
distance from the bottom of the cliff to the boat.
A50√3m
B25√3m
C
25√3m/3
D
25m/3
E
√3m/25
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Question 852
waec 1991

Given that sin \(\theta\) = -0.9063, where O \(\leq\) \(\theta\) \(\leq\) 270°, find \(\theta\).

A65o
B115o
C145o
D245o
E265o
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Question 853
waec 1991

the graph above is a sketch of

Ay = sin 2x
By=sinx
Cy=cos2x
Dy=2sinx
Ey = 2cos x
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Question 854
waec 1991
Two towns, P and Q, are on (4oN 40oW) and (4oN
20oE) respectively. What is the distance between
them, along their line of latitude? (Give your
answer in teems of π and R, the radius of the earth).
A2πR cos4o
BπR sin40o
C
πR/2
cos4o
D
πR/3
cos4o
E
πR/6
cos4o
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Question 855
waec 1991

The common ratio of a G.P. is 2. If the 5th term is
greater than the 1st term by 45, find the 5th term,

A3
B6
C45
D48
E90
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Question 856
waec 1991
The first term a of an A.P is equal to twice the
common difference d. Find, in terms of d, the 5th
term of the A.P.
A4d
B5d
C6d
Da + 5d
E2a + 4d
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Question 857
waec 1991

Find the coordinates of point B

A(0,11/2)
B(O,2)
C(2,0)
D(11/2, 2)
E(11/2, 0)
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Question 858
waec 1991

The shaded portion shows the outer boundary
of the half plane defined by the inequality

A4x + 3y \(\geq\) 6
B4x + 3y = 6
C4x + 3y < 6
D3y >6
E4x < 6
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Question 859
waec 1991

In the diagram above, PXR and PYO are two semicircles with diameters 14cm and 7cm respectively. Find the perimeter of the region (take \(\pi\) = \(\frac{22}{7}\) )

A22cm
B33cm
C40cm
D47cm
E66cm
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Question 860
waec 1991

In the diagram above, PXR and PYO are two semi-circles with diameters 14cm and 7cm respectively. Find the area of the enclosed region, PXROY correct to the nearest whole number

A96cm2
B116cm2
C154cm2
D192cm2
E385cm2
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