congratulations to winners.
Lexor: Well, I'm too old to remember everything from school but I think chance should be even higher?
Example: Baldur's Gate: The Original Saga: 2 games (=2 draws) and 10 entrants
Chance of not winning in 1st draw = 8/10 = 4/5
Chance of not winning in 2nd draw = 8/9
Chance of not winning at all = 4/5 * 8/9 = 32/45 = 0.71(1)
So chance of win = 1 - 0.71(1) = 0.28(8) = 28.(8)%
Edit: Please correct me if im wrong :D
And I will correct you. You made a mistake there. You dont give away 2 games at the first draw, so chances are 9/10 in the first draw. So chance to win would be 1 - 9/10 * 8/9 = 1 - 8/10 = 0.20 = 20%
And it wont change a thing if you draw them same time or one after the other.