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The bar chart shows the frequency distribution of marks scored by students in a class test. Calculate the mean of the distribution.
A6.0
B3.0
C2.4
D1.8
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Question 322
waec2012
The bar chart shows the frequency distribution of marks scored by students in a class test. How many students are in the class?
A10
B24
C25
D30
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Question 323
waec2012
The position of three ships P,Q and R at sea are illustrated in the diagram. The arrows indicated the North direction. The bearing of Q from P is 050o and < PQR = 72o. Calculate the bearing of R and Q
A155o
B80o
C158o
D91o
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Question 324
waec2012
Is the diagram, MN, PQ and RS are three intersecting straight lines. Which of the following statements is/are true? i. t = y ii. x + y + z + m = 180o iii. x + m + n = 180o iv. x + n = m + z
Ai and iv
Bii
Ciii
Div
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Question 325
waec2012
In the diagram, MQ//RS, < TUV = 70o and < RLV = 30o. Find the value of x
A150o
B110o
C100o
D95o
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Question 326
waec2012
The diagram is a circle centre O. If < SPR = 2m and < SQR = n, express m in terms of n
Am = \(\frac{n}{2}\)
Bm = 2n
Cm = n - 2
Dm = n + 2
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Question 327
waec2012
In the diagram, O is a circle centre of the circle PQRS and < PSR = 86o. If < PQR = xo, find x
A108o
B172o
C130o
D50o
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Question 328
waec2012
In the diagram, |QR| = 10m, |SR| = 8m
< QPS = 30o, < QRP = 90o and |PS| = x, Find x
A1.32m
B6.32m
C9.32m
D17.32
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Question 329
waec2012
If x and y are variables and k is a constant, which of the following describes an inverse relationship between x and y?
Ay = kx
By = \(\frac{k}{x}\)
Cy = k\(\sqrt{x}\)
Dy = x + k
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Question 330
waec2012
If x and y are variables and k is a constant, which of the following describes an inverse relationship between x and y?
Ay = kx
By = \(\frac{k}{x}\)
Cy = k\(\sqrt{x}\)
Dy = x + k
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Question 331
waec2012
Factorise completely: 32x2y - 48x3y3
A16x2y(2 - 3xy2)
B8xy(4x - 6x2y2)
C8x2y(4 - 6xy2)
D16xy(2x - 3x2y2)
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Question 332
waec2012
A side and a diagonal of a rhombus are 10cm and 12cm respectively, Find its area
A20cm2
B24cm2
C48cm2
D96cm2
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Question 333
waec2012
The volume of a cuboid is 54cm3. If the length, width and height of the cuboid are in the ratio 2:1:1 respectively, find its total surface area
A108cm2
B90cm2
C80cm2
D72cm2
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Question 334
waec2012
Find the coefficient of m in the expression of (\(\frac{m}{2} - 1 \frac{1}{2}\)) (m + \(\frac{2}{3}\))
A-\(\frac{1}{6}\)
B- \(\frac{1}{2}\)
C-1
D-1\(\frac{1}{6}\)
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Question 335
waec2012
The sum of the interior angles of regular polygon is 1800o. How many sides has the polygon?
A16
B12
C10
D8
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Question 336
waec2012
Solve (\(\frac{27}{125}\))-\(\frac{1}{3}\) x (\(\frac{4}{9}\))\(\frac{1}{2}\)
A\(\frac{10}{9}\)
B\(\frac{9}{10}\)
C\(\frac{2}{5}\)
D\(\frac{12}{125}\)
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Question 337
waec2012
Alfred spent \(\frac{1}{4}\) of his money on food, \(\frac{1}{3}\) on clothing and save the rest. If he saved N72000.00, how much did he spend on food?
AN43,200.00
BN43,000.00
CN42,200.00
DN40,000.00
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Question 338
waec2012
If p = {prime factors of 210} and Q = {prime less than 10}, find p \(\cap\) Q
A{1,2, 3}
B{2, 3, 5}
C{1, 3, 5,7}
D{2,3,5,7}
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Question 339
waec2012
Express 3 - [\(\frac{x - y}{y}\)] as a single fraction
A\(\frac{3xy}{y}\)
B\(\frac{x - 4y}{y}\)
C\(\frac{4y - x}{y}\)
D3 - \(\frac{x - y}{y}\)
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Question 340
waec2012
If x + 0.4y = 3 and y = \(\frac{1}{2}\)x, find the value of (x + y)
