Question

Three coins are tossed simultaneouely using addition on theorem on probability .find the probability that exaclty two tail or atleast one head turn up​

Answer 1

Answer:

when coin is tossed 3 times

(H,H,H) (T,T,T) (T,H,H) (T,T,H) (H,T,H) (H,H,T) (T,H,T) (H,T,T).

probability=possible event/total event

exaclty 2 tail

probability=2/8=1/4

atleast one head

probability=7/8