Question

If two coins are tossed simultaneously, then find the probability of getting 

(i) one head and one tail 

(ii) at most two tails

Answer 1

When two coins are tossed the sample space will be 

S = {(H, H), (H, T), (T, H), (T, T)} 

n(S) = 4

(i) probability of getting 1 head and one tail = 2/4 = 1/2

(ii) Probability of getting almost two tails = 4/4 = 1