Multiple choice

3 unbiased coins are tossed. Find the probability of getting exactly two 'Heads'.

  1. 3/8

  2. 1/2

  3. 5/8

  4. 1/4

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A Correct answer
Explanation

Total outcomes = 2^3 = 8. Favorable outcomes (HHT, HTH, THH) = 3. Probability = 3/8.

AI explanation

The sample space for tossing 3 unbiased coins contains 8 total outcomes. The favorable outcomes for getting exactly two heads are HHT, HTH and THH, giving 3 favorable outcomes. Using the classical probability formula, the probability is 3 divided by 8.