Waec Mathematics Past Questions and Answers

Question 641:

• WAEC 1999

Which of the following pairs of inequalities is represented on the number line?

A. \(x
B. \(x\ge -2 and x>1\)
C. \(x\le -2 and x\ge1\)
D. \(x < -2 and x>1\)

Question 642:

• WAEC 1999

If \(x^2 +15x + 50 = ax^2 + bx + c = 0\). Which of the following statement is not true?

A. X = -5
B. X = 10
C. X + 10 = 0
D. Bc = 750

Question 643:

• WAEC 1999

The root of a quadratic equation in x, are -m and 2n. Find the equation

A. \(x^2 + x(m - 2n)-2mn=0\)
B. \(x^2 - x(m - 2n)-2mn=0\)
C. \(x^2 - x(m - 2n)+2mn=0\)
D. \(x^2 + x(m - 2n)+2mn=0\)

Question 644:

• WAEC 1999

A survey shows that 28% of all the men in a village wear size 9 shoes. What is the probability that a man selected at random in the village wears size 9 shoes?

A. \(\frac{7}{25}\)
B. \(\frac{41}{50}\)
C. \(\frac{1}{2}\)
D. 1

Question 645:

• WAEC 1999

Solve the inequality 2x + 3 < 5x

A. \(x>1\)
B. \(x
C. \(x>\frac{3}{7}\)
D. \(x>-1\)