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UI Post-UTME Mathematics 2021 (Model questions) Question 25

Question 25

Probability

The probability that Olu, Ade and shola will hit a target are 2/3, 3/4 and 4/5 respectively. Find the probability that only Olu will hit the target

  1. A.7/60
  2. B.1/30
  3. C.1/60
  4. D.2/5
Show the answer and explanation

Answer: B (1/30)

Explanation

Olu hits and the other two miss: 2/3 × 1/4 × 1/5 = 2/60 = 1/30.