Opeth Wrote:Two heads in a row is H/H yes?
So therefore we can rule out the combination of T/T and we're left with:
H/T
T/H
H/H
Which is 1/3rd or 33%.
But if you aren't given that one of them is heads, then you can't rule out T/T
edit: actually in sicnarf's example, it's still 50% because you are given that the first coin is heads, so you rule out T/T and T/H. So we're left with:
H/T
H/H
Still a different question though.