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.
Tom will be 25 years old in n years' time. If he is 5 years younger than Bade's present age.
(30 - n)years
(20 - n)years
(25 - n)years
(30 + n)years
Correct answer is A
Let Tom's present agr be x.
Then x = 25 - n
If Tom is 5 years younger than Bade, then Bade's present age is x + 5 = 25 - n + 5
= (30 - n)
In the diagram, VW//YZ, |WX| = 6cm, |XY| = 16cm, |YZ| = 20cm and |ZX| = 12cm. Calculate |VX|
3cm
4cm
6cm
8cm
Correct answer is D
In the diagram, \(\frac{16}{12} = \frac{VX}{6}\) (similar \(\Delta\)s)
VX = \(\frac{16 \times 6}{12}\)
= 8cm
\(\frac{2}{5}\)
\(\frac{7}{60}\)
\(\frac{1}{30}\)
\(\frac{1}{60}\)
Correct answer is C
Hence the probability that only Kebba will hit the target
= P(K)xP(E')xP(O')
= \(\frac{2}{3} \times \frac{1}{4} \times \frac{1}{5}\)
= \(\frac{1}{30}\)
5.6
6.2
6.6
7.0
Correct answer is D
To calculate the mean of grouped data,
- First step to determine the midpoint (x) of each interval or class.
0 - 4 ►2
5 - 9 ► 7
10 - 14 ►12
These midpoints must then be multiplied by the frequencies of the corresponding classes:
2 X 2 = 4
1 X 7 = 7
2 X 12 = 24
Mean = ( 24 + 7 + 4) ÷ ( 2 + 1 + 2 )
: Mean = 7
62
63
64
65
Correct answer is C
Third quartile Q3 = \(\frac{3}{4}\)Nth
Alternatively:
Split the score into equal quarters
44, 47, 48, 49, 50, 51, 52, 53, 53, 54, 58, 59, 60, 61, 63, 65, 67, 70, 73, 75.
Third quartile Q3 = [63 + 65] / 2 = 64