3 fair coins are tossed simultaneously. Find the probability of (i) getting one head (ii) getting atmost one head (iii) getting atleast two head

Explanation

Here, sample space`(S)` will be `{HHH,HHT,HTH,THH,THT,T TH,HT T,T T T}`

`:. n(S) = 8`

(i) Probability of getting one head ` = 3/8`

(ii)Probability of getting at most one head ` = 4/8 = 1/2`

(iii)Probability of getting at least two heads ` = 4/8 = 1/2`