Question
Three unbiased coins are tossed.What is the probability of getting at least 2 heads?
Three unbiased coins are tossed.What is the probability of getting at least 2 heads?
Answer: Option A
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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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