Waec Mathematics Past Questions For Year 1990
Question 11
While doing his physics practical, Idowu recorded a reading as 1.12cm instead of 1.21cm. Calculate his percentage error
- A. 1.17%
- B. 6.38%
- C. 7.44%
- D. 8.035%
- E. 9.00%
Question 12
If log x = \(\bar{2}.3675\) and log y = 0.9750, what is the value of x + y? Correct to three significant figures
- A. 1.18
- B. 1.31
- C. 9.03
- D. 9.44
- E. 9.46
Question 13
The area shaded with horizontal lines is the solution set of the inequalities;
- A. y ≥ x, y + 3 ≥ 2x, x ≤ 3
- B. y ≤ x, y + 2x ≥ -3, x ≤ 3
- C. y ≤ -x, y + 2x ≤ 3, x ≥ -3
- D. y ≥ -x, y + 3 ≤ 2x, x ≥ -3
- E. y ≤ x, y ≤ 2x - 3, x ≥ 3
Question 14
In a class of 80 students, every students had to study economics or geography, or both economics and geography, if 65 students studied economics and 50 studied geography, how many studied both subjects?
- A. 15
- B. 30
- C. 35
- D. 45
- E. 50
Question 15
Let J be the set of positive integers, If H = {x: x∈J, x\(^2\) < 3 and x ≠ 0}, then
- A. H = {1}
- B. H is an infinite set
- C. H = {0, 1, 2}
- D. H = {}
- E. J ≤ H
