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.
Factorize x2 - 2x - 3xy completely
(x - 2)(3x - y)
(x - 3y)(x - 2)
(x - 3y)(x - 3y)
(3x + y)(x - 2)
Correct answer is B
x2 - 2x - 3xy + 6y = x(x - 2) -3y(x - 2)
= (x - 3y)(x - 2)
If (2x + 3)3 = 125, find the value of x
1
2
3
4
Correct answer is A
(2x + 3 )2 = 125
2n + 3 = 3\(\sqrt{125}\)
2x + 3 = 5
2x = 5 - 3
x = \(\frac{2}{2}\)
= 1
If \(\frac{3}{2x} - \frac{2}{3x} = 4\), solve for x
\(\frac{4}{5}\)
\(\frac{4}{13}\)
\(\frac{5}{24}\)
\(\frac{13}{24}\)
Correct answer is C
\(\frac{3}{2x} - \frac{2}{3x} = 4\)
\(\frac{9 - 4}{6x}\); \(\frac{5}{6x}\) = 4
5 = 24x ; x = \(\frac{5}{24}\)
they are both empty
their union is an empty set
their intersection is an empty set
one of them is a subset of the other
Correct answer is C
No explanation has been provided for this answer.
Express the square root of 0.000144 in the standard form
1.2 x 10-4
1.2 x 10-3
1.2 x 10-2
1.2 x 10-1
Correct answer is C
\(\sqrt{0.000144}\) = 0.012
= 1.2 x 10-2