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.
32
12
13
53
Correct answer is B
25x÷2x=5√210
applying the laws of indices
25x−x=210(1/5)
24x=210(1/5)
24x=22
Equating the powers
then 4x = 2
therefore, x = 24 = 12
12
15
10
14
Correct answer is D
each interior angle of a polygon = (n−2)×180n where n = no of side of a polygon
each exterior angle of a polygon = 360n
then (n−2)×180n = 6× 360n
= (n - 2) 180 = 2160
= 180n - 360 = 2160
= 180n = 2160 + 360
= 180n = 2520
therefore, n = 2520180 = 14.
Evaluate, correct to three decimal place 4.314×0.0000560.0067
0.037
0.004
0.361
0.036
Correct answer is D
4.314×0.0000560.0067
0.0002420.0067
= 0.036 ( to 3 decimal places)
23115
11315
13115
21325
Correct answer is C
4137 to base 5
convert first to base 10
4177=4×72+1×71+3×70
= 4 × 49 + 1 × 7 + 3 × 1
= 196 + 7 + 3
= 20610
convert this result to base 5
| 5 | 206 |
| 5 | 41R1 |
| 5 | 8R1 |
| 5 | 1R3 |
| 0R1 |
∴ 413_7 = 1311_5
For what value of x is \frac{ x^2 + 2 }{ 10x^2 - 13x - 3} is undefined?
\frac{1}{5}, \frac{3}{2}
\frac{-1}{5}, \frac{3}{2}
\frac{1}{5}, \frac{-3}{2}
\frac{-1}{5}, \frac{-3}{2}
Correct answer is B
The fraction \frac{ x^2 + 2 }{ 10x^2 - 13x - 3} is undefined when the denominator is equal to zero
then 10x^2 - 13x - 3 = 0
by factorisation, 10x^2 - 13x - 3 = 0 becomes 10x^2 - 15x +2x -3 = 0
5x(2x - 3) + 1(2x - 3) = 0
(5x + 1)(2x - 3) = 0
then, x = \frac{-1}{5} or \frac{3}{2}