Waec Mathematics 2018 Past Questions and Answers

Question 16:

• WAEC 2018

The angles of a polygon are x, 2x, 2x, (x + \(30^o\)), (x + \(20^o\)) and (x - \(10^o\)). Find the value of x

A. \(45^o\)
B. \(95^o\)
C. \(84^o\)
D. \(85^o\)

Question 17:

• WAEC 2018

If M and N are the points (-3, 8) and (5, -7) respectively, find |MN|

A. 8 units
B. 11 units
C. 15 units
D. 17 units

Question 18:

• WAEC 2018

The equation of the line through the points (4,2) and (-8, -2) is 3y = px + q, where p and q are constants. Find the value of p.

A. 1
B. 2
C. 3
D. 9

Question 19:

• WAEC 2018

The mean of 1, 3, 5, 7 and x is 4. Find the value of x

A. 2
B. 4
C. 6
D. 8

Question 20:

• WAEC 2018

The table shows the distribution of goals scored by 25 teams in a football competition. Calculate the probability that a team selected at randon scored either 4 or 7 goals.

A. \(\frac{9}{25}\)
B. \(\frac{1}{5}\)
C. \(\frac{6}{25}\)
D. \(\frac{2}{5}\)