Question

A fair coin is tossed three times. Work out the probability of getting no tails.

Answer 1

There are 2^3 possible combinations
So
P (getting no tails) = 1/2 * 1/2 * 1/2 = 1/8 as each time there is 1/2 chances of getting a heads

Answer 2

1/8

Because each time you have a 1/2 chance of heads or tails

1/2 x 1/2 x 1/2 = 1/8