Combination vs. permutation, right? I don’t care which ace is where; I just care if, among the three cards that the other card COULD be, that card is the one ace left.
But how about this: I deal each of us two cards out of a deck of AS, AH, 2C, and 2D. I ask you if you have an ace and you say yes. Surely the odds of me having both 2C and 2D are the same as above.
Combination vs. permutation, right? I don’t care which ace is where; I just care if, among the three cards that the other card COULD be, that card is the one ace left.
But how about this: I deal each of us two cards out of a deck of AS, AH, 2C, and 2D. I ask you if you have an ace and you say yes. Surely the odds of me having both 2C and 2D are the same as above.