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.

1,041.

What is the volume of a cube if the diagonal of one of the sides is \(\sqrt{50}\)cm?

A.

7.07cm\(^3\)

B.

50.0cm\(^3\)

C.

125.0cm\(^3\)

D.

353.4cm\(^3\)

E.

625.0cm\(^3\)

Correct answer is C

No explanation has been provided for this answer.

1,042.

Evaluate 1.25 × 10\(^2\) × 0.125 × 10\(^3\) × 12.5 × 10\(^{-4}\) leaving your answer in standard form

A.

1.995 × 103

B.

1.95 × 102

C.

1.95 × 101

D.

1.95 × 10-2

E.

1.95 × 10-3

Correct answer is C

Where 1.25 × 10\(^2\) = 125

0.125 × 10\(^3\) = 125

12.5 × 10\(^{-4}\) = 0.00125

:  125 x 125 x 0.00125

= 19.53125 or 1.95 x 10\(^1\)

 

1,043.

Given that the universal set U={14,15,16,17,18,19,20}, J ={16,19,20} and K= {14,15,18}, find (J' ∩ K')1.

A.

{17}

B.

{16, 17, 19, 20}

C.

{1, 4, 15, 17, 18}

D.

{14, 15, 16, 18, 19, 20}

E.

{14, 15, 16, 17, 18, 19, 20}

Correct answer is D

U = {14,15,16,17,18,19,20}

J' = {14,15,17,18}

K' = {16,17,19,20}

(J' \(\cap\) K') = {17}

(J' \(\cap\) K')' = {14,15,16,18.19,20}

1,044.

Two fair coins are tossed at the same time. what is the probability of getting a head?

A.

1

B.

\(\frac{3}{4}\)

C.

\(\frac{1}{2}\)

D.

\(\frac{1}{3}\)

E.

\(\frac{1}{4}\)

Correct answer is E

No explanation has been provided for this answer.

1,045.

If t varies inversely as the cube of s, and t = 24, when s = 3, find t when s = 2

A.

8

B.

24

C.

27

D.

81

E.

648

Correct answer is D

No explanation has been provided for this answer.