Waec 2006 Mathematics Past Questions And Answers
A rectangular carpet 2.5m long and 2.4m wide covers 5% of a rectangular floor. Calculate the area of the floor
- A. 30m2
- B. 57m2
- C. 120m2
- D. 225m2
In the diagram P, Q, R, S are points on the circle RQS = 30o. PRS = 50o and PSQ = 20o. What is the value of xo + yo?
- A. 260o
- B. 130o
- C. 100o
- D. 80o
Which of the following is not a measure of centre tendency?
- A. mean
- B. mode
- C. range
- D. median
Evaluate \(\log_{0.25} 8\)
- A. \(\frac{3}{2}\)
- B. \(\frac{2}{3}\)
- C. \(-\frac{2}{3}\)
- D. \(-\frac{3}{2}\)
In the diagram, |QR| = 5cm, PQR = 60o and PSR = 45o. Find |PS|, leaving your answer in surd form.
- A. 4\(\sqrt{5}\)cm
- B. 3\(\sqrt{7}\)cm
- C. 4\(\sqrt{6}\)cm
- D. 5\(\sqrt{6}\)cm
P is a point on the same plane with a fixed point A. If P moves such that it is always equidistant from A, the locus of P is
- A. a straight line joining A and P
- B. the perpendicular bisector of AP
- C. a circle with centre A
- D. the triangle with centre P
The temperature in a chemical plant was -5oC at 2.00 am. The temperature fell by 6oC and then rose again by 7oC. What was the final temperature?
- A. -6oC
- B. -4oC
- C. 4oC
- D. 8oC
Simplify \(8^{n} \times 2^{2n} \div 4^{3n}\)
- A. \(2^{-n}\)
- B. \(2^{1 - n}\)
- C. \(2^{n}\)
- D. \(2^{n + 1}\)
The mean and median of integers x, y, z and t are 5 and z respectively. If x ≤ y ≤ z ≤ t and y = 4, find (x + t).
- A. 12
- B. 11
- C. 10
- D. 8
The table shows the distribution of the ages of a group of people in a village.
| Ages (in years) | 15 - 18 | 19 - 22 | 23 - 26 | 27 - 30 | 31 - 34 | 35 - 38 |
| Frequency | 40 | 33 | 25 | 10 | 8 | 4 |
Using an assumed mean of 24.5, calculate the mean of the distribution.
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