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What is the total surface area of a closed cylinder of height 10cm and diameter 7cm? [Take \(\pi = \frac{22}{7}\)]
A77cm2
B227cm2
C297cm2
D374cm2
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Question 12
waec2005
Find the mean of the numbers 1, 3, 4, 8, 8, 4 and 7
A4
B5
C6
D7
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Question 13
waec2005
Given that the root of an the equation \(2x^2 + (k+2)x+k=0\) is 2, find the value of k
A-4
B-2
C-1
D\(-\frac{1}{4}\)
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Question 14
waec2005
A sequence is given by \(2\frac{1}{2}, 5, 7\frac{1}{2}, .....\) if the nth term is 25, find n
A9
B10
C12
D15
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Question 15
waec2005
If \(log_9x= 1.5\),find x
A36
B27
C24.5
D13.5
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Question 16
waec2005
Solve the equation \(\frac{2y-1}{3} - \frac{3y-1}{4} = 1\)
A-8
B-13
C13
D19
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Question 17
waec2005
Solve the equation 2x - 3y = 22; 3x + 2y = 7
A-5
B-4
C4
D5
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Question 18
waec2005
What is the diameter of a circle of area 77cm2 [Take \(\pi = \frac{22}{7}\)]
A\(\frac{\sqrt{2}}{7}cm\)
B\(3\frac{1}{2}cm\)
C7cm
D\(7\sqrt{2}cm\)
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Question 19
waec2005
From a point R, 300m north of P, man walks eastward to a place Q which is 600m from P. Find the bearing of P from Q, correct to the nearest degreeee
A026o
B045o
C210o
D240o
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Question 20
waec2005
In the diagram, PQRS is a parallelogram and ∠QRT = 30o. Find x
A95o
B100o
C120o
D150o
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Question 21
waec2005
In the diagram PQ and MN are straight lines. Find the value of x
A13o
B17o
C28o
D30o
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Question 22
waec2005
The probability that John and James pass an examination are 3/4 and 3/5 respectively, find the probability of both boys failing the examination
A\(\frac{1}{10}\)
B\(\frac{3}{10}\)
C\(\frac{9}{20}\)
D\(\frac{11}{20}\)
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Question 23
waec2005
The lengths of the adjacent sides of a right - angled triangle are xcm, (x-1)cm. If the length of the hypotenuse is \(\sqrt{13}cm\), find the value of x
A2
B3
C4
D5
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Question 24
waec2005
Make f the subject of the relation \(v = u + ft\)
A\(\frac{v-u}{t}\)
B\(\frac{u-v}{t}\)
C\(t(v+u\)
D\(\frac{v}{u}-t\)
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Question 25
waec2005
expand (2x-3y)(x-5y)
A\(2x^2 + 13xy - 15y^2\)
B\(2x^2 - 13xy - 15y^2\)
C\(2x^2 + 13xy + 15y^2\)
D\(2x^2 - 13xy + 15y^2\)
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Question 26
waec2005
Solve the equation 2\(^7\) = 8\(^{5-x}\)
A\(\frac{5}{8}\)
B\(\frac{8}{3}\)
C\(\frac{3}{2}\)
D\(\frac{15}{4}\)
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Question 27
waec2005
Convert 101101two to a number in base ten
A61
B46
C45
D44
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Question 28
waec2005
In the diagram, PR is a diameter, ∠PRQ = (3x-8)o and ∠RPQ = (2y-7)o. s x in terms of y
A\(x=\frac{75-2y}{3}\)
B\(x=\frac{105-3y}{2}\)
C\(x=\frac{105-2y}{3}\)
D\(x=\frac{75-3y}{2}\)
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Question 29
waec2005
In the diagram, KL//MN, ∠LKP = 30o and ∠NMP = 45o. Find the size of the reflex ∠KPM.
A285o
B255o
C225o
D210o
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Question 30
waec2005
A fair die is tossed once, what is the probability of obtaining neither 5 or 2
