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.

3,106.

Solve the equation 5x2 - 4x - 1 = 0

A.

-1, 1/5

B.

-1, -1/5

C.

1, 1/5

D.

1, -1/5

E.

-1, 5

Correct answer is D

5x2 - 4x - 1 = 0
5x2 5x + x -1 = 0
5x(x - 1) + (x - 1) = 0
(5x + 1)(x -1) = 0
x = -1/5 or 1 = 0

3,107.

Simplify \(\frac{8^{\frac{2}{3}}*27^{\frac{-1}{3}}}{64^{\frac{1}{3}}}\)

A.

-3

B.

\(\frac{1}{9}\)

C.

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

D.

\(\frac{27}{8}\)

E.

4

Correct answer is C

\(\frac{8^{\frac{2}{3}}*27^{\frac{-1}{3}}}{64^{\frac{1}{3}}}\)
\(\frac{2^2*3^{-3}}{4} = 3^{-1} = \frac{1}{3}\)

3,108.

A piece of cloth was measured as 6.10m. If the actual length of the cloth is 6.35, find the percentage error, correct to 2 decimal places

A.

3.05%

B.

3.95%

C.

15.00%

D.

25.00%

E.

39.30%

Correct answer is B

No explanation has been provided for this answer.

3,109.

The nth term of a sequence is represented by 3 x 2(2-n). Write down the first three terms of the sequence

A.

3/2, 3, 6

B.

6, 3, 3/2

C.

3/2, 3, 1/3

D.

2/3, 3, 8/3

E.

3/2, 0, 6

Correct answer is B

When n = 1, n = 2, n = 3
3 x 22 - 1 = 6
3 x 22 - 2 = 3
3 x 22 - 3 = 3/2

3,110.

Convert 35 to a number in base two

A.

1011two

B.

10011two

C.

100011two

D.

110010two

E.

110001two

Correct answer is C

No explanation has been provided for this answer.