Jamb 1979 Mathematics Questions
Question 21:
One of the following statements is wrong. Which is it?
- A If a triangle is equiangular then it is also equilateral
- B If a triangle is equilateral then it is also then it is also equiangular
- C If two triangles are similar then they are also congurent
- D The sum of the interior angles of any triangle is 180 degrees
Question 22:
PQRS is a cyclic quadrilateral with PQ as diameter of the circle. If < PQS = 15o find < QRS
- A 75<sup style='font-size: smaller;'>o</sup>
- B 37\(\frac{1}{2}\)<sup style='font-size: smaller;'>o</sup>
- C 127\(\frac{1}{2}\)<sup style='font-size: smaller;'>o</sup>
- D 105<sup style='font-size: smaller;'>o</sup>
Question 23:
Make x the subject of the equation a(b + c) + \(\frac{5}{d}\) - 2 = 0
- A C = \(\frac{2d - 5 - b}{ad}\)
- B C = \(\frac{2d - 5 - abd}{ad}\)
- C C = \(\frac{2d - 5 - ab}{ad}\)
- D C = \(\frac{5 - 2d - b}{ad}\)
Question 24:
Which of the following values of the variable x, (a)x = 0, (b)x = -3, (c)x = 9, satisfy the inequalities 0 < \(\frac{x + 3}{x - 1}\) < 2?
- A (a), (b), (c)
- B (c)
- C None of the choices
- D All of the above
Question 25:
On each market day Mrs. Bassey walks to the market from her home at a steady speed. This journey normally takes her 2 hours to complete. She finds, however, that by increasing her usual speed by 1 km/hr she can save 20 minutes. Find her usual speed in km/hr
- A 1\(\frac{2}{3}\)
- B 2
- C 5
- D 6
- E 10