Waec Mathematics Past Questions and Answers

Question 1806:

• WAEC 2018

If 3x\(^o\) 4(mod 5), find the least value of x

A. 1
B. 2
C. 3
D. 4

Question 1807:

• WAEC 2018

Find the inter-quartile range of 1, 3, 4, 5, 8, 9, 10, 11, 12, 14, 16

A. 6
B. 7
C. 8
D. 9

Question 1808:

• WAEC 2018

If x : y = \(\frac{1}{4} : \frac{3}{8}\) and y : z = \(\frac{1}{3} : \frac{4}{9}\), find x : z

A. 2:3
B. 3:4
C. 3:8
D. 1:2

Question 1809:

• WAEC 2018

Expression 0.612 in the form \(\frac{x}{y}\), where x and y are integers and y \(\neq\) 0

A. \(\frac{153}{250}\)
B. \(\frac{68}{111}\)
C. \(\frac{61}{100}\)
D. \(\frac{21}{33}\)

Question 1810:

• WAEC 2018

The angle of elevation of the top of a tree from a point 27m away and on the same horizontal ground as the foot of the tree is 30\(^o\). Find the height of the tree.

A. 27m
B. 13.5 \(\sqrt{3m}\)
C. 13.5 \(\sqrt{2m}\)
D. 9\(\sqrt{3m}\)