Question

Three fair coins are tossed. What is the possibility that two heads and one tail appear?

Answer 1

Love questions like this. these are called bernoulli trials.

Answer 2

3/8?

Answer 3

P(1st head) = 1/2 (i.e out of 2 possible outcomes)
P(2nd head) = 1/2 (i.e the first event does not effect the second event)
P(tail) = 1/2 (the 3rd event is unaffected by the two previous events)

Answer 4

P(1st head AND 2nd Head AND 3rd tail) = 1/2 x 1/2 x 1/2 = 1/8

Answer 5

there is your answer