The possible outcomes if a coin is tossed 3 times is
S = {(HHH),(TTT),(HTT),(THT),(TTH),(THH),(HTH),(HHT)}
n(S) = 8
(i) Let E1 = Event of getting all heads = {(HHH)}
∴ n(E1) = 1
(ii) Let E2 = Event of getting atleast 2 heads = {(HHT),(HTH),(THH),(HHH)}
∴ n(E2) = 4
