Mathematics questions and answers

Mathematics Questions and Answers

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.

196.

A poultry farmer realized 200 eggs from his birds and sold 5 \(\frac{1}{2}\) crates of eggs. What percentages of eggs are left?

A.

82.5%

B.

15%

C.

17.5%

D.

85%

Correct answer is C

5 crates = 30 eggs * 5 = 150eggs

1/2 crate = 15 eggs

Total sold = 165

remainder = 200 - 165 = 35

And 35 is equivalent 17.5% of the realized eggs 

197.

What will be the result obtained when the numerator of \(\frac{96}{50}\) is decreased by 37.5% and its denominator decreased by 20%.

A.

1.5

B.

\(\frac{5}{2}\)

C.

\(\frac{96}{48}\)

D.

0.5

Correct answer is A

Numerator: 96 → 37.5% of 96 = 36

Decreased by 36 → 96 - 36

New numerator = 60

 

Denominator: 50 → 20% of 50 = 10

Decreased by 10 → 50 - 10 = 40

New Denominator = 40

 

New fraction = \(\frac{60}{40}\) or 1.5

198.

The locus of points equidistant from a fixed point.

A.

circle

B.

perpendicular lines

C.

straight line

D.

bisector

Correct answer is A

Definition of a circle

199.

Evaluate Log\(_2\) 8√2

A.

3.0

B.

4.5

C.

3.5

D.

2.5

Correct answer is C

where Log\(_2\) 8√2 → Log\(_2\) √128 

→ Log\(_2\) 128\(^\frac{1}{2}\)

= \(\frac{1}{2}\) * (Log\(_2\) 128) → \(\frac{1}{2}\) * (Log\(_2\) 2\(^7\))

=  7 * \(\frac{1}{2}\) * (Log\(_2\) 2)

where (Log\(_2\) 2) = 1 

→  7 * \(\frac{1}{2}\) * 1

= \(\frac{7}{2}\) or 3.5

200.