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?

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

Hence, option 3 is the correct answer.

By: Amit Kumar