Waec Mathematics Past Questions For Year 2018
Question 21
Find the value of x for which \(\frac{x - 5}{x(x - 1)}\) is defined
- A. 0 or 5
- B. -5 or 5
- C. -11 or 5
- D. 0 or 1
Question 22
The total surface area of a hemispher is 75\(\pi cm^2\). Find the radius.
- A. 5.0 cm
- B. 7.0 cm
- C. 8.5 cm
- D. 12.0 cm
Question 23
The table shows the distribution of goals scored by 25 teams in a football competition. Calculate the probability that a team selected at random scored at most 3 goals.
- A. \(\frac{3}{25}\)
- B. \(\frac{1}{5}\)
- C. \(\frac{6}{25}\)
- D. \(\frac{2}{5}\)
Question 24
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 25
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
