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.
The sum of four numbers is 1214\(_5\). What is the average expressed in base five?
114
141
401
411
Correct answer is B
Convert to base 10, divide and then re-convert to base 5.
If \(\frac{9^{2x-1}}{27^{x+1}} = 1\), find the value of x.
8
5
3
2
Correct answer is B
\(\frac{9^{2x - 1}}{27^{x + 1}} = 1\)
\(\implies 9^{2x - 1} = 27^{x + 1}\)
\((3^{2})^{2x - 1} = (3^{3})^{x + 1}\)
\(2(2x - 1) = 3(x + 1) \implies 4x - 2 = 3x + 3\)
\(4x - 3x = 3 + 2 \implies x = 5\)
63
84
113
133
Correct answer is D
45/2% + 95/2% = 70%
100% - 70% = 30% (i.e women)
=> 30% = 84
1% = 84/30
95/2% = (84/30 x 95/2) = 133.
3
1
1/2
1/4
Correct answer is C
(√98 - √50)/√32 = √(49x2) - √(25x2) √(16x2)
=> (7√2 - 5√2)/4√2 = 1/2
Simplify 1 - (7/3 x 5/4) + 3/5
-16/15
-79/60
-37/15
-151/60
Correct answer is B
\(1 - (\frac{7}{3} \times \frac{5}{4}) + \frac{3}{5}\)
= \(1 - \frac{35}{12} + \frac{3}{5}\)
= \(\frac{60 - 175 + 36}{60}\)
= \(\frac{-79}{60}\)