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.
51o
64o
77o
103o
Correct answer is D
cos\(\alpha\) = \(\frac{10}{16}\) = 0.625
\(\alpha\) = cos-1(0.625)
= 51.3o
∠PQR = 2\(\alpha\)
= 2(51.3o)
= 102.6
= 103o
In the diagram, PQR is a triangle.|PQ| = |PR|, |PS| = |SQ| and PRS = 50°. What is the size of ∠PSQ?
75o
80o
85o
95o
Correct answer is B
< PQS = 50° (PQ = PR)
< PQS = < SPQ = 50° (QS = PS)
In triangle PSQ, < PQS + < QPS + < PSQ = 180°
50° + 50° + < PSQ = 180°
< PSQ = 180° - 100° = 80°
Which of the following is not the the size of an exterior angle of a regular polygon?
15o
18o
20o
21o
Correct answer is D
The size of an exterior angle = \(\frac{360}{n}\)
From the options, all options can perfectly divide 360°, except 21°.
How many students are there in the group?
25
30
52
55
Correct answer is C
Total number of students = 20 + 16 + 10 + 6
= 52 students
22.5 years
23.0 years
24.0 years
27.5 years
Correct answer is B
No explanation has been provided for this answer.