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.
Find the size of the angle marked x in the diagram.
108o
112o
128o
142o
Correct answer is C
x + 52o = 90
x = 90 - 52
x = 38o
k = opposite angle Z
k = 38o
y + k = 90o
y + 38o = 90o
y = 90o - 38o
y = 52o
y = x = 180o(sum of angles on straight line)
52 + x = 180o
x = 180 - 52
x = 128
In the diagram, PO and OR are radii, |PQ| = |QR| and reflex < PQR is 240o. Calculate the value x
60o
55o
50o
45o
Correct answer is A
< Q = \(\frac{240}{2}\) (angle at centre twice that at the circumference)
< Q = 120o
Also < POR = 360 - 240
= 120o
( < s at centre) since /PQ/ = /QR/, < x = < R
Byt < x + < R + O + Q = 360 (sum of interior < s of quadrilateral)
x + R + 120 = 360o
x + R = 360 - 240 = 120; Since x = R
x + x = 120
2x = 120
Since x = R
x + x = 120
2x = 120
x = \(\frac{120}{2}\)
= 60o
\(\bigtriangleup\) PQK
\(\bigtriangleup\) PKS
\(\bigtriangleup\) SKR
\(\bigtriangleup\) PSR
Correct answer is C
No explanation has been provided for this answer.
9o
10o
11o
12o
Correct answer is B
tan \(\theta\) = \(\frac{9}{50}\) = 0.18
\(\theta = tan^{-1} 0.18\)
\(\theta\) = 10.20
If 27x = 9y. Find the value of \(\frac{x}{y}\)
\(\frac{1}{3}\)
\(\frac{2}{3}\)
1\(\frac{1}{2}\)
3
Correct answer is B
27x = 9y
33x = 32y
3x = 2y