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
Underground poker Underground poker Underground poker is poker played in a venue that is not operating in accordance with the gaming laws of its jurisdiction. What exactly constitutes "underground" poker depends on the laws of the locality in question. In many (but not all) jurisdictions, an unlicensed poker game may nevertheless be legal so long as the game is played in a dwelling house, the host is not profiting from hosting the game and/or the entry fees do not exceed a certain threshold. Even if a game itself is unlawful, in some jurisdictions it is not illegal to merely play in such