Waec Mathematics 2010 Past Questions and Answers

Question 21:

• WAEC 2010

Simplify \(\frac{2}{2 + x} + \frac{2}{2 - x}\)

A. \(\frac{4}{4 - x^3}\)
B. \(\frac{8}{4 - x^2}\)
C. \(\frac{4x}{4 - x^2}\)
D. \(\frac{8 - 4x}{4 - x^2}\)

Question 22:

• WAEC 2010

The sum of the exterior of an n-sided convex polygon is half the sum of its interior angle. find n

A. 6
B. 8
C. 9
D. 12

Question 23:

• WAEC 2010

If y = \(\frac{y(2\sqrt{x^2 + m})}{3N}\), make x the subject of the formular

A. \(\frac{\sqrt{9y^2 N^2 - 2m}}{3}\)
B. \(\frac{\sqrt{9y^2 N^2 - 4m}}{2}\)
C. \(\frac{\sqrt{9y^2 N^2 - 3m}}{2}\)
D. \(\frac{\sqrt{9y^2 N - 3m}}{2}\)

Question 24:

• WAEC 2010

The nth term of the sequence -2, 4, -8, 16.... is given by

A. T_n = 2ⁿ
B. T_n = (-2)ⁿ
C. Tⁿ = (-2n)
D. T_n = n[sup][/sup]

Question 25:

• WAEC 2010

How many times, correct to the nearest whole number, will a man run round circular track of diameter 100m to cover a distance of 1000m?

A. 3
B. 4
C. 5
D. 6