Waec Mathematics Past Questions For Year 2006
Question 21
If 2x + y = 10, and y \(\neq\) 0, which of the following is not a possible value of x?
- A. 4
- B. 5
- C. 8
- D. 10
Question 22
A machine valued at N20,000 depreciates by 10% every year. What will be the value of the machine at the end of two years?
- A. N16,200
- B. N1,4,200
- C. 12,000
- D. 8000.
Question 23
If p = {1, 3, 5, 7, 9} and Q = {2, 4, 6, 8, 10} are subsets of a universal set. U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. What are the elements of P1 \(\cap\) Q1?
- A. {1, 3, 5, 7, 9}
- B. [2, 4, 6, 8, 10}
- C. \(\varnothing\)
- D. {1, 2, 6, 8, 10}
Question 24
The wheel of a tractor has a diameter 1.4m. What distance does it cover in 100 complete revolutions? [Take \(\pi = \frac{22}{7}\)]
- A. 140m
- B. 220m
- C. 280m
- D. 440m
Question 25
A seller allows 20% discount for cash payment on the marked price of his goods. What is the ratio of the cash payment to the marked price
- A. 1:4
- B. 1:5
- C. 3:4
- D. 4:5
