A box contains three coins two of them are fair and one two-headed. A ceim is selected atrandom and tossed. If the head appears the coin is tossed again, if a tail appears, then amerlercoin is selected from the remaining coins and tossed. (i) Find the probability that head appears twice.(ii) If the same coin is tossed twice. find the probability that it is two headed coin.(iii) Find the probability that tail appears twice.