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 x = 3, Y = 2 and z = 4, what is the value of 3x2 - 2y + z?
17
27
35
71
Correct answer is B
x = 3, y = 2, z = 4
3x2 - 2y + z
= 3(3)2 - 2(2) + 4
3(9) - 4 + 4 = 27
For what value of x is the expression \(\frac{2x - 1}{x + 3}\) not defined?
3
2
\(\frac{1}{2}\)
-3
Correct answer is D
\(\frac{2x - 1}{x + 3}\) not defined
x + 3 = 0
x = -3
I am x years old and my brother is 3 years older. How old was my brother last year?
(x - 4)years
(x + 2) years
(3x - 10years
(3x + 1)years
Correct answer is B
I am x years old; My brother = 3 + x; My brother
last year = (3 + x) - 1 = x + 3 - 1
= (x + 2) years
N80,000
N40,000
N2,000
10,000
Correct answer is B
Let Abu's share = 2x;
Kayode's = x
Uche's share = \(\frac{x}{2}\)
Total: 2x + x + \(\frac{x}{2}\) = N140,000
\(\frac{7x}{2}\) = N140,000
x = \(\frac{280,000}{7}\) = N40,000
Kayode's share = N40,000
Simplify \(\frac{3x^3}{(3x)^3}\)
1
\(\frac{1}{3}\)
\(\frac{1}{9}\)
\(\frac{1}{27}\)
Correct answer is C
\(\frac{3x^3}{(3x)^3}\) = \(\frac{3 \times x^3}{3^3 \times x^3}\)
= \(\frac{3 \times x^3}{3 \times 3 \times 3 \times x^3}\)
= \(\frac{1}{3^2}\)
= \(\frac{1}{9}\)