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.
1/2
1/3
2/5
3/4
Correct answer is B
Prob.(A outcome) = \(\frac{1}{6}\), Prob.(B outcome) = ¼
P(A ∪ B) = 1/12, Prob.(A ∩ B)
Prob.(A ∩ B) = Prob.(A) + Prob.(B) − Prob.(A ∪ B)
1/6 + 1/4 − 1/12
= (2 + 3 − 1) ÷ 12
= 4/12
= 1/3
Prob.(A ∩ B) = 1/3
The volume of a cone (s) of height 6cm and base radius 5cm is
157cm3
155cm3
175cm3
145cm3
Correct answer is A
V = ⅓ πr2 h
Volume of a cone (Vc) = ⅓ × 3.14 × (5)2 × 6
= 156.93
157cm3
10.5cm
5cm
10cm
3cm
Correct answer is D
No explanation has been provided for this answer.
The area of a circle of radius 4cm is equal to (Take π = 3.142 )
10.3cm2
15.7cm2
50.3cm2
17.4cm2
Correct answer is C
Area of a circle (A) = πr2
Radius = 4cm
π = 3.142
A = 3.142 × (4)2
= 3.142 × 16
= 50.272
A = 50.3cm2 (1dp)
Simplify \( \frac{1}{(x + 1)} + \frac{1}{(x − 1)} \)
2x/(x + 1)(x−3)
2x/(x + 1)(x−1)
2x/(x + 1)2
2x(x+1)2
Correct answer is B
[1 ÷ (x+1)] + [1 ÷ (x − 1)]
= ((x − 1) + [(x + 1)) ÷ (x+1)(x − 1)]
Using the L.C.M.
= (x − 1 + x + 1) ÷ (x + 1)(x − 1)
= (x + 2 − 1 + 1) ÷ (x + 1)(x − 1)
= 2x ÷ (x + 1)(x − 1) =2x ÷ (x + 1)(x − 1)