How good are you with figures and formulas? Find out with these Mathematics past questions and answers. This Test is useful for both job aptitude test candidates and students preparing for JAMB, WAEC, NECO or Post UTME.
The solution of the equation x2 - 2x = 8 is
x = 0 or 2
x = -2 or 4
x = 2
x = -4
x = 2 or 4
Correct answer is B
x2 - 2x = 8 = 8
x2 - 2x - 8 = 0
(x2 - 4x) + (2x - 8) = 0
When x + 2 = 0
x = -2, when x - 4 = 0
x = 4
-2 or 4
\(\frac{5}{6}\)
11
3\(\frac{3}{5}\)
2\(\frac{1}{2}\)
1\(\frac{1}{5}\)
Correct answer is D
x \(\alpha\) y = x \(\alpha\) \(\frac{1}{z}\)
x \(\alpha\) \(\frac{1}{z}\)
x = k \(\frac{y}{z}\)
k = \(\frac{xz}{y}\) = \(\frac{9 \times 8}{24}\)
= 3
x = \(\frac{xz}{y}\)
= \(\frac{3 \times 5}{6}\)
= \(\frac{15}{6}\)
= \(\frac{5}{2}\)
= 2\(\frac{1}{2}\)
N5000
N1800
N12000
N24000
N8000
Correct answer is C
A : B = 3 : 5
Total ratio = 3 + 5 = 8
Let rept, the total profit, A receives \(\frac{3x}{8}\)
\(\frac{5x}{8}\) - \(\frac{3}{x}\) = 3000
\(\frac{5x}{8}\) - \(\frac{3x}{8}\) = 3000
= \(\frac{2x}{8}\)
= 3000
2x = 2400
x = 1200
N12,000
In base ten, the number 101101 (base 2) equals
15
4
45
32
90
Correct answer is C
(101101)2 \(\begin{array}{c|c} 2^5 & 2^4 & 2^3 & 2^2 & 2^1 & 2^o\\ \hline 1 & 0 & 1 & 1 & 0 & 1\end{array}\)
= 1 x 25 + 0 x 24 + 1 x 23 + 1 x 22 + 0 x 21 + 1 x 2o
= 32 + 0 + 8 + 4 + 0 + 1
= (45)10
N330
N396.75
N300
N293.25
N360
Correct answer is C
Let x represent his monthly salary before increase 15% of
x = 345
% profit = (100 + 15)%
= 115%
\(\frac{115}{100}\)x = 345
115x = 34500
x = N300.00