I am a (semi-)proffecional poker player with a penchant for practical maths. When i calculate the odds of certain things i often get discrepancies between what various website quote and what i get. some help would be apreciated. In texas hold 'em you get delt 2 cards and another 5 on the board. I argue this:
if i am dealt A,K (in the hand), what is the chance of hitting either an A or a King in the next 5 cards to hit the board.
Texas Holdem Odds - Probabilities for Poker Hands
quotes it as being 50% (just under half way down the page). However, i calculate this:
3 aces left in deck + 3 kings left in deck = 6 cards the satisfy my outcome. assuming a normal 52-card deck (so there are 50 cards left in the deck i get):
which is a huge difference.
please tell that website has it wrong?! If not help me work out this VERY SIMPLE calculation