A

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Q. Three unbiased coins are tossed.What is the probability of getting at least 2 heads?

  • (A) 1/4
  • (B) 1/2
  • (C) 3/4
  • (D) 1/3
  • Correct Answer - Option(B)
  • Views: 15
  • Filed under category Math
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Explanation by: Admin

Here S= {TTT, TTH, THT, HTT, THH, HTH, HHT, HHH}.

Let E = event of getting at least two heads = {THH, HTH, HHT, HHH}.

P(E) = n(E) / n(S)

= 4/8= 1/2

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