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.

3,016.

The sides of a right angle triangle in ascending order of magnitude are 8cm, (x-2)cm and x cm. Find x

A.

16

B.

17

C.

34

D.

90

Correct answer is B

\(8^2 + (x - 2)^2 = x^2\\
64 + x^2 - 4x + 4 = x^{2}\\
x^2 - 4x + 68 = x^2\\
-4x = -68\\
-x = \frac{-68}{4} = 17\)

3,017.
3,018.

Which of the following statements is true from the diagram above?

A.

m + n = 90o

B.

m = n

C.

n > 45o

D.

m < 45o

Correct answer is A

No explanation has been provided for this answer.

3,019.

Describe the locus L shown in the diagram below

A.

Locus of points equidistant from X and Y

B.

Locus of points equidistant from X and Z

C.

Locus of points equidistant from \(\bar{ZX}\) and \(\bar{ZY}\)

D.

Locus of points equidistant from \(\bar{XY}\) and \(\bar{ZY}\)

Correct answer is C

No explanation has been provided for this answer.

3,020.

In the diagram, DE||BC, |AD| = x cm and |DB| = |AE| = ycm. Find |CE| in terms of x and y

A.

x

B.

\(\frac{x^2}{y}\)

C.

\(\frac{y}{x^2}\)

D.

\(\frac{y^2}{x}\)

Correct answer is D

\(\frac{x}{x+y}=\frac{y}{x+CE}\\
xy + xCE = xy + y^2\\
∴xCE = y^2\\
CE=\frac{y^2}{x}\)