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.
Which of the following correctly expresses 48 as a product of prime factors?
3 x 4 x 4
2 x 3 x 8
2 x 2 x 2 x 3 x 4
2 x 2 x 2 x 2 x 3
Correct answer is D
48 = 2 x 2 x 2 x 2 x 3
\(2\frac{1}{4}\)%
4%
5%
6%
Correct answer is B
\(I = \frac{PRT}{100}\)
\(R = \frac{100I}{PT}\)
\(R = \frac{100 \times 60}{2000 \times \frac{3}{4}}\)
\(R = \frac{6000}{1500}\)
= 4%
Solve the equation 3 + 5x - 2x2 = 0
\(-\frac{1}{2},-3\)
2, 3
-2, 3
\(-\frac{1}{2},3\)
Correct answer is D
\(3 + 5x - 2x^2 = 0\\
3 + 6x - x - 2x^2 = 0\\
3(1 + 2x) - x(1 + 2x) = 0\\
(3-x)(1+2x)=0\\
3-x = 0 \hspace{1mm}or \hspace{1mm}1+2x = 0\\
x = 3\hspace{1mm} x = -\frac{1}{2}\\
x = 3 \hspace{1mm}or\hspace{1mm} x =-\frac{1}{2}\)
Find the volume (in cm\(^3\)) of the solid shown above
100cm3
150cm3
175cm3
250cm3
Correct answer is C
Total volume = (5 x 5) x 5 + (5 x 5) x 2
= 125 + 50
= 175 cm\(^3\)
The area of a circle is 38.5cm2. Find its diameter [take \(\pi = \frac{22}{7}\)]
22cm
14cm
7cm
6cm
Correct answer is C
\(\pi r^2 = 38.5\\
\frac{}{} = r^2 = 38.5\\
r^2 = \frac{38.5 \times 7}{22}\\
r = \sqrt{12.25} = 3.5\\
diameter = 2r = 2 \times 3.5 = 7cm\)