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.

991.

The roots of a quadratic equation in x, are -m and 2n. Fine equation.

A.

x2 - x(2n-m) – 2mn = 0

B.

x2 + x(2n - m) - 2mn = 0

C.

x2 + x(m - 2n) + 2mn = 0

D.

X2 + x (m + 2n ) + 2mn = 0

E.

x2 - x (m - 2n) - 2mn = 0

Correct answer is A

No explanation has been provided for this answer.

992.

Evaluate (Log13 - log5) ÷ X(log5-log13) without using tables

A.

X

B.

–x

C.

X-1

D.

–X-1

E.

-1

Correct answer is D

No explanation has been provided for this answer.

993.

A sales boy gave a change of N75.00 to a buyer instead of N80.00, calculate his percentage error, correct to one decimal place?

A.

6.00%

B.

6.20%

C.

6.30%

D.

6.60%

E.

6.70%

Correct answer is C

No explanation has been provided for this answer.

994.

What must be added to b2-3ab to make it a perfect square?

A.

-3a

B.

-\(\frac{3}{2}\)

C.

\(\frac{9}{4}\)

D.

\(\frac{9a}{4}\)

E.

\(\frac{9^2}{4}\)

Correct answer is E

No explanation has been provided for this answer.

995.

A car travels at an average speed of 75km/h. Find its speed in metres per second.

A.

270m/s

B.

208m/s

C.

27.0m/s

D.

20.8m/s

E.

2.08m/s

Correct answer is D

No explanation has been provided for this answer.