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.
If the numbers M, N, Q are in the ratio 5:4:3, find the value of \(\frac{2N - Q}{M}\)
2
3
1
4
Correct answer is C
M:N:Q == 5:4:3
i.e M = 5, N = 4, Q = 3
Substituting values into equation, we have...
\(\frac{2N - Q}{M}\)
= \(\frac{2(4) - 3}{5}\)
= \(\frac{8 - 3}{5}\)
= \(\frac{5}{5}\)
= 1
A man invested N5,000 for 9 months at 4%. What is the simple interest?
N150
N220
N130
N250
Correct answer is A
S.I. = \(\frac{P \times R \times T}{100}\)
If T = 9 months, it is equivalent to \(\frac{9}{12}\) years
S.I. = \(\frac{5000 \times 4 \times 9}{100 \times 12}\)
S.I. = N150
\(5\frac{2}{3}\)
30
\(4\frac{1}{3}\)
50
Correct answer is D
\(\frac{3\frac{2}{3} \times \frac{5}{6} \times \frac{2}{3}}{\frac{11}{15} \times \frac{3}{4} \times \frac{2}{27}}\)
\(\frac{\frac{11}{3} \times \frac{5}{6} \times \frac{2}{3}}{\frac{11}{15} \times \frac{3}{4} \times \frac{2}{27}}\)
\(\frac{110}{54} \div \frac{66}{1620}\)
50
2
1
4
0
Correct answer is A
2q35 = 778
2 x 52 + q x 51 + 3 x 50 = 7 x 81 + 7 x 80
2 x 25 + q x 5 + 3 x 1 = 7 x 8 + 7 x 1
50 + 5q + 3 = 56 + 7
5q = 63 - 53
q = \(\frac{10}{5}\)
q = 2
\(\frac{2}{15}\)
\(\frac{3}{15}\)
\(\frac{7}{15}\)
\(\frac{13}{15}\)
Correct answer is D
Man lives = \(\frac{2}{3}\) not live = \(\frac{1}{3}\)
Wife lives = \(\frac{3}{5}\) not live = \(\frac{2}{5}\)
P(at least one lives to 80 years) = P(man lives to 80 not woman) + P(woman lives to 80 and not man) + P(both live to 80)
\(P = (\frac{2}{3} \times \frac{2}{5}) + (\frac{2}{5} \times \frac{1}{3}) + (\frac{2}{3} \times \frac{3}{5})\)
= \(\frac{4}{15} + \frac{3}{15} + \frac{6}{15}\)
= \(\frac{13}{15}\)