Re: Odds of hitting trips on the flop from a pair
 

[ QUOTE ]
[ QUOTE ]
I hear the argument that you should count only unseen cards, but I don't understand how card distribution doesn't affect your odds.

[/ QUOTE ]

What do you know about the distribution of cards with 21 opponents that you don't know with 1? Nothing. So it doesn't matter.

Also see this thread.

[/ QUOTE ]

I was just about to link to that same thread.

All that matters are the odds that the next 3 cards in the deck, which become the flop, contain your rank. The odds of that are the same whether the rest of the cards are in your opponent's hands, or still in the deck.