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WAEC Mathematics 2006 Question 7

Question 7

Probability

A fair coin is tossed three times. Find the probability of getting two heads and one tail.

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

Answer: B (3/8)

Explanation

There are 2 × 2 × 2 = 8 equally likely outcomes. HHT, HTH and THH give two heads and one tail, so the probability is 3/8.