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.
(2a-3b) (2a+3b)
(2a-b) (2a+3b)
(2a-3b) (a+3b)
(a-3b) (a+3b)
Correct answer is A
Check:
(2a-3b) (2a+3b)
4a\(^2\) + 6ab - 6ab - 9b\(^2\)
4a\(^2\) - 9b\(^2\)
Find x if the mean of 2x, 4x, 2x - 13 and 6x is 4.
1.5
2.0
1.0
0.5
Correct answer is B
mean (4) = \(\frac{2x + 4x + 2x - 13 + 6x}{4}\)
16 = 14x - 13
16 + 13 = 14x
x = 29/14 or 2.07
If 8, p, q and 26 is an A.P. Find the values of p and q
p = 14 and q = 14
p = 20 and q = 14
p = 20 and q = 20
p = 14 and q = 20
Correct answer is D
The common difference is 6. Just add 6 to get the next term 8, 14, 20 and 26
If y varies inversely as x and x = 3 when y =4. Find the value of x when y = 12
4
1
2
3
Correct answer is B
y = 1/x; y = \(\frac{k}{x}\)
k =xy → 3 * 4 = 12
x = \(\frac{k}{y}\)
x = \(\frac{12}{12}\) = 1
223
232
32
-232
Correct answer is A
3 * 5 = 3 - 5 + (3 x 5)\(^2\)
-2 + (15)\(^2\)
-2 + 225
= 223