Poker probability The "nCr" function on most scientific calculators can be used to calculate hand frequencies; entering with and , for example, yields formula_2 as above. The royal flush is a case of the straight flush. It can be formed 4 ways (one for each suit), giving it a probability of 0.000154% and odds of 649,739 : 1. When ace-low straights and ace-low straight flushes are not counted, the probabilities of each are reduced: straights and straight flushes each become 9/10 as common as they otherwise would be. The 4 missed straight flushes become flushes and the 1,020 missed straights become no
Pai gow poker hand. The only two-card hands are one pair and high cards. Five-card hands use standard poker hand rankings with one exception: in most casinos, the "wheel" (the hand A-2-3-4-5) is the second-highest straight. At most casinos in California and Michigan this rule doesn't apply, and A-2-3-4-5 is the lowest possible straight. The joker plays as a bug, that is, in the five-card hand it can be used to complete a straight or flush if possible; otherwise it is an ace. In the two-card hand it always plays as an ace, except in several southern Californian casinos where the joker is