Waec Mathematics Past Questions and Answers

Question 686:

• WAEC 2000

The probabilities that Kodjo and Adoga pass an examination are \(\frac{3}{4}\) and \(\frac{3}{5}\) respectively. Find the probability of both boys failing the examination

A. \(\frac{1}{10}\)
B. \(\frac{3}{10}\)
C. \(\frac{9}{20}\)
D. \(\frac{2}{3}\)

Question 687:

• WAEC 2000

Which of the following statement is not true about a rectangle? I.Each diagonal cuts the rectangle into two congruent triangles. II. A rectangle has four lines of symmetry III. The diagonals intersect at right angles

A. I and II only
B. III only
C. II only
D. II and III only

Question 688:

• WAEC 2000

In the diagram, PQRS is a circle center O. PQR is a diameter and ∠PRQ = 40°. Calculate ∠QSR.

A. 30^o
B. 40^o
C. 45^o
D. 50^o

Question 689:

• WAEC 2000

Each side of a regular convex polygon subtends an angle of 30° at its center. Calculate each interior angle

A. 75^o
B. 150^o
C. 160^o
D. 68^o

Question 690:

• WAEC 2000

If the interior angles of hexagon are 107°, 2x°, 150°, 95°, (2x-15)° and 123°, find x.

A. \(57\frac{1}{2}^{\circ}\)
B. \(65^{\circ}\)
C. \(106^{\circ}\)
D. \(120^{\circ}\)