Question

What is the probability of getting exactly two heads when tossing three fair coins? Option 1: 1/4 Option 2: 3/8 Option 3: 1/2 Option 4: 5/8

Answer 1

Option 2 is correct:

P(two heads on three fair coins) =

3(1/2)(1/2)(1/2) = 3(1/8) = 3/8