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.
14.67cm
42.67cm
101.33cm
543.33cm
Correct answer is C
The perimeter of the sector \(=2r+\frac{\theta}{360}\times 2\pi r \\
\Rightarrow 28 + \frac{300}{360} \times \frac{2}{1} \times \frac{22}{7}\times \frac{14}{1} = \frac{220}{3}+28\\
73.133+28=101.33cm\)
77cm2
227cm2
297cm2
374cm2
Correct answer is C
T.S.A of s closed cylinder = \(2\pi r(r+h)\\
=\frac{2}{1}\times \frac{22}{7} \times \frac{7}{2}\left(\frac{7}{2}+\frac{10}{1}\right)=\frac{22}{1}\left(\frac{27}{2}\right)=27\times 11=297cm^2\)
Find the mean of the numbers 1, 3, 4, 8, 8, 4 and 7
4
5
6
7
Correct answer is B
mean \(=\frac{1+3+4+8+8+4+7}{7}=\frac{35}{7}=5\)
Given that the root of an the equation \(2x^2 + (k+2)x+k=0\) is 2, find the value of k
-4
-2
-1
\(-\frac{1}{4}\)
Correct answer is A
Substituting for x in the equation
\(2(2)^2 + (k+2)2+k = 0 \Rightarrow 8 +2k + 4 + k =0 \Rightarrow 3k =-12; k=-4\)
A sequence is given by \(2\frac{1}{2}, 5, 7\frac{1}{2}, .....\) if the nth term is 25, find n
9
10
12
15
Correct answer is B
\(a = 2\frac{1}{2}, nth = a + (n-1)d \Rightarrow 25 = 2\frac{1}{2} + (n-1)2\frac{1}{2}\\
25 = \frac{5}{2}+(n-1)\frac{5}{2} \Rightarrow 22\frac{1}{2} = \frac{5n-5}{2}\Rightarrow \frac{45}{2} = \frac{5n-5}{2}\\
45 = 5n - 5 \Rightarrow 5n = 50 \Rightarrow n = 10\)