A coin is tossed three times, if head occurs on first two tosses, find the probability of getting head on third toss.

Explanation

Here,

`A = `Event that head occurs on first two tosses.

`A = {HHT,HHH}`


`:. n(A) = 2`

Let `B = `Event that head appears on the third toss.

`B = {HHH,HTH,T TH,THH}`

Now, `(AnnB) = {(HHH)}`

...