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.

1,101.

If an investor invest N450,000 in a certain organization in order to yield X as a return of N25,000. Find the return on an investment of N700,000 by Y in the same organization.

A.

N14,950.50K

B.

N25,150.30K

C.

N15,000.00K

D.

N38,888.90K

Correct answer is D

[Return ÷ Investment] as a ratio ;

i.e The Ratio is Return : Investmen

[(Return1÷ Investment1 ) = (Return2÷ Investment2)]

R1 = N 25000

R2 =?

I1 = N450,000,

I1 = N 700000

(25000 ÷ 450000) = (R2 ÷ 700000)

R2 = [(25000 × 700000 ) ÷ 450000]

= N38,888.90K

∴ The return on a investment of Y = N38888.90K

1,102.

Given that S and T are sets of real numbers such that S = {x : 0 \(\leq\) x \(\leq\) 5} and T = {x : − 2 < x < 3} Find S \(\cup\) T

A.

−3 < x < \(\leq\)3

B.

−2< x < \(\leq\)5

C.

2< x < \(\geq\) −5

D.

−1< x \(\geq\) \(\leq\)2

Correct answer is B

S = {0, 1, 2, 3, 4, 5}

T = {− 1, 0, 1, 2}

S \(\cup\) T = {− 1, 0, 1, 2, 3, 4, 5 }

⇒ − 2 < x ≤ 5

1,103.

Determine the third term of a geometrical progression whose first and second term are 2 and 54 respectively

A.

1458

B.

1485

C.

1345

D.

1258

Correct answer is A

1st G.P. = a =2

2nd G.P. = ar\(^{2 −1}\) = 54

2(r) = 54

r = 54/2 = 27

r = 27

3rd term = ar\(^2\) = (2) (27)\(^2\)

2 × 27 × 27

= 1458

1,104.

Find the distance between the points (-2,-3) and (-2,4)

A.

3m

B.

2.4m

C.

3.2m

D.

7.0m

Correct answer is D

No explanation has been provided for this answer.

1,105.

Simplify \(6\frac{1}{12} − 2 ¾ + 1 ½ \)

A.

\( 3 \frac{5}{6}\)

B.

\( 4 \frac{5}{6}\)

C.

\( 2 \frac{1}{6}\)

D.

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

Correct answer is B

6½ − 2¾ + 1½

73/12 − 11/4 + 3/2

[(73 − 33 + 18) ÷ (12)]

58/12

29/6

\( 4\frac{5}{6}\)