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Mathematics Past Questions and Answers

Waec Mathematics Questions

Question 686:
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 \(\frac{2}{3}\)
View Answer & Explanation
Question 687:
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
View Answer & Explanation
Question 688:
In the diagram, PQRS is a circle center O. PQR is a diameter and ∠PRQ = 40°. Calculate ∠QSR.
  • A 30o
  • B 40o
  • C 45o
  • D 50o
View Answer & Explanation
Question 689:
Each side of a regular convex polygon subtends an angle of 30° at its center. Calculate each interior angle
  • A 75o
  • B 150o
  • C 160o
  • D 68o
View Answer & Explanation
Question 690:
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 \(120^{\circ}\)
View Answer & Explanation