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.
29
26
24
25
23
Correct answer is B
Arranging the scores in ascending order:
12, 17, 25, 25, 25, 25, 26, 26, 26, 29, 29, 29, 35, 35.
The median is the average of the 7th and 8th marks.
= \(\frac{26 + 26}{2} = 26\)
x < 5
x < 7\(\frac{1}{2}\)
x > 5
x > 7\(\frac{1}{2}\)
Correct answer is A
\(\frac{x}{2} - \frac{1}{3} < \frac{2x}{5} + \frac{1}{6}\)
\(\frac{x}{2} - \frac{2x}{5} < \frac{1}{6} + \frac{1}{3}\)
\(\frac{x}{10} < \frac{1}{2}\)
\(2x < 10 \implies x < 5\)
24
42
74
47
72
Correct answer is D
Let the tens digits of the number be x and the unit digit be y
3x = 2y - 2
3x - 2y = -2.......(i)
If the digits are interchanged, the tens digit becomes y, the unit digit becomes x. Hence 2(10x + y) = 10y + x + 20
(20x + 2y) - (10y + x) = 20
19x - 8y = 20.....(ii)
Multiply eqn.(i) by 8 and eqn.(ii) by 2
24x - 16y = -16......(iii)
38x - 16y = 40........(iv)
eqn(iv) - eqn(iii)
14x = 56
x = 4
Sub. for x = 4 in eqn(i)
3(4) - 2y = -2
14 = 2y
y = 7
So the original number is 10(4) + 7
i.e. 10x + y
= 47
40r:50t
44r : 50t
50r : 44t
44r:55t
55r:44t
Correct answer is C
Ratio of bread to sugar = r:t
25% increase in bread = \(\frac{125r}{100}\)
10% increase in sugar = \(\frac{100t}{100}\)
New ratio = \(\frac{125r}{100}\):\(\frac{110t}{100}\)
= 25r:22t
= 50r:44t
If sine x equals cosine x, what is x in radians?
\(\frac{\pi}{2}\)
\(\frac{\pi}{3}\)
\(\frac{\pi}{4}\)
\(\frac{\pi}{6}\)
\(\frac{\pi}{12}\)
Correct answer is C
\(\sin x = \cos x\)
\(\implies x = 45°\)
In radians, \(x = \frac{\pi}{4}\).