Waec Mathematics Past Questions and Answers

Question 1126:

• WAEC 2007

In a , < PQR = < PRQ = 45^o. which of the following statements is/are correct? i. \(\bigtriangleup\)PQR is an equalateral triangle ii. \(\bigtriangleup\)PQR is an isosceles triangle iii. \(\bigtriangleup\)PQR is a right-angled triangle

A. Ii only
B. I and ii only
C. Ii and iii only
D. I and ii only

Question 1127:

• WAEC 2007

The table above gives the distribution of the marks of a number of students in a test.
\(\begin{array}{c|c} Mark &1 & 2 & 3 & 4 & 5 & 6 \\ \hline Frequency & 5 & 3 & 6 & 4 & 2 & 5\end{array}\), find the mode of the distribution.

A. 2
B. 3
C. 5
D. 6

Question 1128:

• WAEC 2007

If the probability of an event occurring is x, what is the probability of the event not occurring?

A. 1 - x
B. X - 1
D. \(\frac{1}{x}\)

Question 1129:

• WAEC 2007

The table shows the ages(in years) of twenty children chosen at random from a community. What is the mean age? \(\begin{array}{c|c} Age(years) & 1 & 2 & 3 & 4 & 5 \\ \hline {\text {Number of children}} & 2 & 3 & 5 & 6 & 4 \end{array}\)

A. 4.46 years
B. 3.35 years
C. 3.30years
D. 3.00 years

Question 1130:

• WAEC 2007

The table shows the ages(in years) of twenty children chosen at random from a community. What is the median of the distribution? \(\begin{array}{c|c} Age(years) & 1 & 2 & 3 & 4 & 5 \\ \hline {\text {Number of children}} & 2 & 3 & 5 & 6 & 4 \end{array}\)

A. 3.5 years
B. 3.0 years
C. 2.5 years
D. 2.0 years