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WAEC Further Mathematics 2015 Question 34

Question 34

Probability

Four fair coins are tossed once. Calculate the probability of obtaining equal number of heads and tails.

  1. A.1/4
  2. B.3/8
  3. C.1/2
  4. D.15/16
Show the answer and explanation

Answer: B (3/8)

Explanation

Two heads and two tails: ⁴C₂ = 6 of the 16 outcomes, 6/16 = 3/8.