Waec Mathematics Past Questions and Answers

Question 561:

• WAEC 1998

A die with faces numbered 1 to 6 is rolled once. What is the probability of obtaining 4?

A. \(\frac{1}{36}\)
B. \(\frac{1}{6}\)
C. \(\frac{1}{3}\)
D. \(\frac{1}{2}\)
E. \(\frac{2}{3}\)

Question 562:

• WAEC 1998

In the diagram above, the area of triangle ABC is 35cm², find the value of y

A. 5cm
B. 10cm
C. 17.5cm
D. 28cm
E. 70cm

Question 563:

• WAEC 1998

The graph of the quadratic expression

A. \(y=x^2 + x - 2\)
B. \(y=x^2 - x + 2\)
C. \(y=x^2 - x - 2\)
D. \(y=x + x + 2\)
E. \(y=x^2 - 2 x - 2\)

Question 564:

• WAEC 1998

The values of x when y = -1 are approximately

A. -10 and 2.0
B. -1.3 and 2.3
C. -0.6 and 2.6
D. -0.6 and 1.6
E. 1.6 and 1.6

Question 565:

• WAEC 1998

A box contain 2 white and 3 blue identical balls. If two balls are picked at random, one after the other, without replacement, what is the probability of picking two balls of different colours?

A. \(\frac{5}{25}\)
B. \(\frac{7}{20}\)
C. \(\frac{3}{5}\)
D. \(\frac{2}{3}\)
E. \(\frac{5}{6}\)