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.
210o
150o
105o
50o
Correct answer is D
Sum of interior angles of any polygon is (2n - 4) right angle; n angles of the nonagon = 9
where 3 are equal and 6 other angles = 1110o
( 2 x 9 - 4)90o = (18 - 4)90o
= 14 x 90o = 1260o
9 angles = 12600, 6 angles = 1110o
Remaining 3 angles = 1260o - 1110o = 150o
size of one of the3 angles \(\frac{150}{3}\) = 50o
4:9
4:5
1:3
2:3
Correct answer is B
h1 = \(\frac{h_1 + h_2}{1.5}\) = \(\frac{h_1}{h_2} = 2\)
\(\frac{A_{\bigtriangleup PQR}}{A_{TP(QRST)}} = \frac{\frac{1}{2} \times 2 \times h_1}{\frac{1}{2} \times h_2 (2 + 3)}\)
\(\frac{2}{5} \times \frac{h_1}{h_2} = \frac{2}{5} \times 2\)
= \(\frac{4}{5}\)
30o
40o
45o
50o
Correct answer is A
From the diagram, POQ is a diameter; o is the centre of the circle and TP is a tangent where RTP = 30o
RTP = RQP = x(at circumference = made by tangent outside the circle) i.e x = 30o
An (\(n - 2)^2\) sided figure has n diagonals. Find the number n diagonals for a 25-sided figure
7
8
9
10
Correct answer is A
(n-2)\(^2\)=25
n - 2 = 5
n = 5 + 2 = 7
\(\theta\)o + \(\phi\)o = 902
\(\phi\)o = 902 - 2\(\theta\)o
\(\theta\)o = \(\phi\)o
\(\phi\)o = 2\(\theta\)o
\(\theta\)o + 2\(\phi\)o
Correct answer is E
180 - \(\phi\)o = \(\theta\)o + \(\phi\)o (Sum of opposite interior angle equal to its exterior angle)
180 = 2\(\phi\) + \(\theta\)o