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.

1,376.

From the diagram which of the following statements are correct? i. XQ is a radius of a circle centre Q. ii. /XQ/ = /QY/. iii. /QX/ = /XY/

A.

i only

B.

i and ii only

C.

ii and iii only

D.

i, ii and iii

Correct answer is B

No explanation has been provided for this answer.

1,377.

The pie chart shows the distribution of 4320 students who graduated from four departments in a university. If a student is picked at random from the four departments, what id the probability that he is not from the education department?

A.

\(\frac{3}{10}\)

B.

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

C.

\(\frac{5}{18}\)

D.

\(\frac{7}{10}\)

Correct answer is D

\(\frac{\text{education}}{\text{graduates}} = \frac{108}{360} \times 4320\)

= 1296

Pr(Education) = \(\frac{1296}{4320} = \frac{1}{10}\)

pr(not education) = 1 - \(\frac{3}{10}\)

= \(\frac{10 - 3}{10}\)

= \(\frac{7}{10}\)

1,378.

The pie chart shows the distribution of 4320 students who graduated from four departments in a university. How many students graduated from the science department?

A.

840

B.

864

C.

920

D.

960

Correct answer is B

\(\frac{\text{science}}{\text{graduates}}\) = \(\frac{\theta}{360}\) x 4320

where \(\theta\) + 100 + 80 + 108 = 360

\(\theta\) = 360 - 288 = 360

\(\frac{\text{science}}{\text{graduates}}\) = \(\frac{72}{360} \times 4320\)

= 864

1,379.

In the diagram, angle 20o is subtended at the centre of the circle, find the value of x

A.

30o

B.

50o

C.

80o

D.

100o

Correct answer is B

2(30 + x) = 360 - 200

60 + 2x = 160

2x = 160 - 60

2x = 100

x = \(\frac{100}{2}\)

x = 50

1,380.

If /XY/ = 50m, how far cast of X is Y?

A.

25.5m

B.

40.6m

C.

40.8m

D.

43.3m

Correct answer is D

Required distance = x

where \(\frac{1}{50m}\) = sin 60 x 50m x 0.866

x = 43.3m