Two unbiased coins are tossed simultaneously find the probability of getting at most one head

 Two unbiased coins are tossed simultaneously. We have to find the probability of getting at most one head.

If one of the elementary events HT, TH, TT occurs, then we say that at most one head is obtained.Favourable number of elementary events = 3

Hence,required probability\(= \frac { 3 } { 4 }\)

Answer