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.
(12)
(4, 8, 16, 20)
(3, 6, 9, 15, 18)
(1,2,5,7,10,11,13,17,19)
(3, 4, 6, 8, 9, 12, 15, 16, 18, 20)
Correct answer is B
E = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20}
P = {3, 6, 9, 12, 15, 18}
Q = {4, 8, 12, 16, 20}
P' = {1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17, 19, 20}
P' \(\cap\) Q = {4, 8, 16, 20}
11
20
21
22
24
Correct answer is B
\(T_{n} = a + (n - 1) d\) (terms of an A.P)
\(T_{1} = a\)
\(T_{2} = a + d\)
\(T_{10} = a + 9d\)
\(a + a + d = 2a + d = 4 ... (i)\)
\(a + 9d = 19 ... (ii)\)
(ii) x 2: \(2a + 18d = 38 ... (iii)\)
(iii) - (i) : \(17d = 34 \implies d = 2\)
\(2a + 2 = 4 \implies 2a = 2\)
\(a = 1\)
\(T_{5} + T_{6}\)
= \((a + 4d) + (a + 5d)\)
= \(2a + 9d\)
= \(2(1) + 9(2)\)
= 20
A string is 4.8m. A boy measured it to be 4.95m. Find the percentage error.
\( \frac{5}{16} \)%
\(1\frac{5}{16} \)%
\( 3\frac{1}{33} \)%
\( 3\frac{1}{8} \)%
25%
Correct answer is D
4.95m - 4.8m = 0.15m
\(\frac{0.15}{4.8} \times 100%\)
= \(\frac{25}{8}\)
= \(3\frac{1}{8}\)%
A house bought for N100,000 was later auctioned for N80,000. Find the loss percent.
20%
30%
40%
50%
60%
Correct answer is A
Loss = N(100,000 - 80,000)
= N20,000.
Loss percentage = \(\frac{20,000}{100,000} \times 100%\)
= 20%
What is the number whose logarithm to base 10 is \(\bar{3}.4771\)?
3.0
0.3
0.03
0.003
0.0003
Correct answer is D
No explanation has been provided for this answer.