2006 - WAEC Mathematics Past Questions and Answers - page 1
1
Evaluate (0.13)\(^3\)correct to three significant figures
A
0.00219
B
0.00220
C
0.00300
D
0.00390
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2
Simplify: 11011\(_2\) - 1101\(_2\)
A
101000\(_2\)
B
1100\(_2\)
C
1110\(_2\)
D
1011\(_2\)
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3
Simplify \(\frac{25 \frac{2}{3} \div 25 \frac{1}{6}}{( \frac{1}{5})^{-\frac{7}{6}} \times ( \frac{1}{5})^{\frac{1}{6}}}\)
A
25
B
\(\frac{1}{5}\)
C
1
D
\(\frac{1}{25}\)
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4
Simplify \(\frac{x - 4}{4} - \frac{x - 3}{6}\)
A
\(\frac{x - 18}{12}\)
B
\(\frac{x - 6}{12}\)
C
\(\frac{x - 18}{24}\)
D
\(\frac{x - 6}{24}\)
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5
Given that y = 1 - \(\frac{2x}{4x - 3}\), find the value of x for which y is undefined
A
3
B
\(\frac{3}{4}\)
C
\(\frac{-3}{4}\)
D
-3
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6
P is a point on the same plane with a fixed point A. If P moves such that it is always equidistant from A, the locus of P is
A
a straight line joining A and P
B
the perpendicular bisector of AP
C
a circle with centre A
D
the triangle with centre P
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7
A fair coin is tossed three times. Find the probability of getting two heads and one tail.
A
\(\frac{1}{2}\)
B
\(\frac{3}{8}\)
C
\(\frac{1}{4}\)
D
\(\frac{1}{8}\)
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8
If 30% of y is equal to x, what in terms of x, is 30% of 3y?
A
\(\frac{x}{9}\)
B
\(\frac{x}{3}\)
C
x
D
3x
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9
A baker used 40% of a 50kg bag of flour. If \(\frac{1}{8}\) of the amount used was for the cake, how many kilogram of flour was used for the cake?
A
2\(\frac{1}{2}\)
B
6\(\frac{1}{2}\)
C
15\(\frac{3}{8}\)
D
17\(\frac{1}{2}\)
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10
If tan y = 0.404, where y is acute, find cos 2y
A
0.035
B
0.719
C
0.808
D
0.927
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