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JAMB Mathematics 1993 Question 50

Question 50

Probability

The chances of three independent events X, Y, Z occurring are ½, ⅔, ¼ respectively. What are the chances of Y and Z only occurring?

  1. A.⅛
  2. B.1/24
  3. C.1/12
  4. D.¼
Show the answer and explanation

Answer: C (1/12)

Explanation

Y and Z happen but X does not: (1 − ½) × ⅔ × ¼ = 1/12.