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.
75
120
165
195
240
Correct answer is E
No explanation has been provided for this answer.
If n{A} = 6, n{B} = 5 and n{A ∩ B} = 2, find n{A ∪ B}
7
8
9
13
15
Correct answer is C
No explanation has been provided for this answer.
4.58 cm
8.02 cm
16.04 cm
32.08 cm
34 cm
Correct answer is A
No explanation has been provided for this answer.
Given that (3 - y) ÷ 2x = (6y + 7) ÷ (4x - 5), find the value of x when y = 2
\(\frac{64}{5}\)
6
\(\frac{5}{34}\)
\(\frac{-5}{34}\)
\(\frac{-64}{5}\)
Correct answer is D
No explanation has been provided for this answer.
If cos x = - \(\frac{5}{13}\) where 180° < X < 270°, what is the value of tan x -sin x ?
\(\frac{111}{13}\)
\(\frac{321}{65}\)
-\(\frac{216}{65}\)
\(\frac{112}{13}\)
\(\frac{131}{65}\)
Correct answer is C
Given cos x = - \(\frac{5}{13}\)
→ adj = -5, hyp = 13
Pythagoras' rule → hyp\(^2\) = Opp\(^2\) + adj\(^2\)
Opp\(^2\) = 13\(^2\) - [-5]\(^2\) → 169 - 25
Opp = √144 → 12
tan x = \(\frac{opp}{adj}\) → - \(\frac{12}{5}\)
sin x = \(\frac{opp}{hyp}\) → \(\frac{12}{13}\)
; tan x - sin x → - \(\frac{12}{5}\) - \(\frac{12}{13}\)
= - \(\frac{216}{65}\)