posted by jess on .
What are the odds in favor of getting at least one head
in three successive flips of a coin?
1/2 * 1/2 * 1/2
ooops, I misread. One head in three tries, so there are three ways
So it is 3*1/2*1/2*1/2
The prob of at least one head with 3 coins
= 1 - 1/8
(I excluded the case of all tails)
so the odds in favour of at least one head