Question

a coin is tossed three times. what is the probability of getting at least two heads

Answer 1

A coin tossed two times

Here S = {TT, TH, HT, HH} = 4

Let E = event of getting at most two heads.

Then E = {TH, HT, HH,TT} = 4 probability of getting at most 2 heads = n(E) / n(S) = 4 / 4 = 1