WAEC Mathematics Past Questions & Answers

996.

The table below gives the distribution of marks obtained by a number of pupils in a class test.

The mode of the distribution is

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

997.

Simplify $\left(\frac{3}{4} - \frac{1}{3}\right)\times 4\frac{1}{3}\div 3\frac{1}{4}$

$\frac{5}{9}$

$\frac{5}{16}$

$\frac{8}{13}$

$\frac{16}{5}$

View answer & explanation

Correct answer is A

$(\frac{3}{4} - \frac{1}{3}) \times 4\frac{1}{3} \div 3\frac{1}{4}$

= $(\frac{9 - 4}{12}) \times \frac{13}{3} \div \frac{13}{4}$

= $\frac{5}{12} \times \frac{13}{3} \times \frac{4}{13}$

= $\frac{5}{9}$

998.

In the diagram, LMT is a straight line. lf O is the centre of circle LMN, OMN = 20°, LTN = 32° and |NM| = |MT|, find LNM.

44^o

46^o

52^o

70^o

View answer & explanation

Correct answer is B

< MNT = < MTN = 32°

< NMT = 180° - 2(32°) = 116°

< OMN + < NMT + < LMO = 180°

20° + 116° + < LMO = 180° $\implies$ < LMO = 180° - 136° = 44°

< LMN = < LMO + < OMN

= 44° + 20° = 64°

< NOM = 180° - 2(20°) = 140°

< NLM = $\frac{1}{2} \times < NOM = 70°$

< LNM + < LMN + < NLM = 180°

< LNM + 64° + 70° = 180°

< LNM = 180° - 134° = 46°

999.

Which of the following is not a rational number?

-5

$\sqrt{4}$

$3\frac{3}{4}$

$\sqrt{90}$

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

1000.

The number of goals scored by a school team in 10 netball matches are as follows: 3, 5, 7, 7, 8, 8, 8, 11, 11, 12. Find the probability that in a match, the school team will score at most 8 goals.

$\frac{7}{10}$

$\frac{2}{5}$

$\frac{3}{5}$

$\frac{1}{5}$

View answer & explanation

Correct answer is A

Number of at most 8 goals = 7

P(at most 8 goals) = $\frac{7}{10}$

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