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 loga270 - loga10 + loga \(\frac{1}{3}\) = 2, what is the value of a?
3
4
5
6
Correct answer is A
loga270 - loga10 + loga\(\frac{1}{3}\) = 2
loga270 + loga\(\frac{1}{3}\) - loga10 = 2
loga(270\(\frac{\frac{1}{3}}{10}\)) = 2
loga9 = 2
aa = 9
a = \(\sqrt{9}\) = 3
Which of these equations best describes the points of intersection of the curve and the line?
\(x^2 + 5x - 6 = 0\)
x2 - 5x - 6 = 0
x2 + x - 6 = 0
x2 - x - 6 = 0
Correct answer is C
The roots are -3 and 1
x = -3 and x = 1
y = (x + 3)(x - 1)
= x2 - x + 3x - 3
y = x2 + x - 6 = 0
If x + y = 12 and 3x - y = 20, find the value of 2x - y
8
10
12
15
Correct answer is C
x + y = 12 + 3x - y = 20 --------------- 4x = 32 x = 8 x + y = 12; 8 + y = 12; y = 12 - 8 = 4 2x - y = 2(8) - 4; 16 - 4 = 12
If 2x + y = 10, and y \(\neq\) 0, which of the following is not a possible value of x?
4
5
8
10
Correct answer is B
The value for which the equation is impossible
2x = 10 (if y = 0)
x = 5
N16,200
N1,4,200
12,000
8000
Correct answer is A
D = P(I - \(\frac{R}{100}\))n where P = N20,000; R = 10%, n = 2
D = 20,000(I - \(\frac{10}{100}\))2
= 20000(0.9)2
20,000 x 0.81 = N16,200