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WAEC Further Mathematics 2018 Question 30

Question 30

Probability

Out of 70 schools, 42 of them can be attended by boys and 35 can be attended by girls. If a pupil is selected at random from these schools, find the probability that he/she is from a mixed school.

  1. A.1/1
  2. B.1/10
  3. C.1/6
  4. D.1/5
Show the answer and explanation

Answer: B (1/10)

Explanation

Mixed schools: 42 + 35 − 70 = 7. P = 7/70 = 1/10.