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JAMB Mathematics 2002 Question 45

Question 45

Probability

The probability of a student passing any examination is 2/3. If the student takes three examinations, what is the probability that he will not pass any of them?

  1. A.2/3
  2. B.4/9
  3. C.8/27
  4. D.1/27
Show the answer and explanation

Answer: D (1/27)

Explanation

The chance of failing one examination is 1 − 2/3 = 1/3. Failing all three: (1/3)3 = 1/27.