Waec Mathematics Past Questions For Year 2018
Question 11
The volume of a cylindrical tank, 10m high is 385 m\(^2\). Find the diameter of the tank. [Take \(\pi = \frac{22}{7}\)]
- A. 14m
- B. 10m
- C. 7m
- D. 5m
Question 12
Simplify; \(\frac{2 - 18m^2}{1 + 3m}\)
- A. \(2 (1 + 3m)\)
- B. \(2 (1 + 3m^2)\)
- C. \(2(1 - 3m)\)
- D. \(2(1 - 3m^2)\)
Question 13
If x : y : z = 3 : 3 : 4, evaluate \(\frac{9x + 3y}{6z - 2y}\)
- A. 1\(\frac{1}{2}\)
- B. 2
- C. 2\(\frac{1}{2}\)
- D. 3
Question 14
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. \(\frac{2}{5}\)
Question 15
The mean of 1, 3, 5, 7 and x is 4. Find the value of x
- A. 2
- B. 4
- C. 6
- D. 8
