Multiple choice

In tossing a fair coin twice, find the probability of getting exactly one head

  1. $\dfrac{1}{6}$
  2. $\dfrac{3}{4}$
  3. $\dfrac{2}{3}$
  4. $\dfrac{1}{2}$
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D Correct answer
Explanation

Sample space: {HH, HT, TH, TT}. Outcomes with exactly one head: {HT, TH}. Probability = 2/4 = 1/2.

AI explanation

Using the classical probability formula, the total possible outcomes when tossing a fair coin twice are HH, HT, TH, and TT, giving 4 outcomes. The favorable outcomes for getting exactly one head are HT and TH. The required probability is 2 divided by 4, which equals 1/2.

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