The chances of getting winning combinations. 40,000:1 is a chance of getting a Royal Flush. 10,000:1 is a chance of getting a Straight Flush. Only one of 423 combinations can be a Four of a Kind. The chance of getting Full House is 86:1. Only one of 93 combinations can be a Flush. Only one of 85 combinations can be a Straight. 13:1 is a chance of getting a Three of a Kind. The chance of getting Two Pairs is 8:1. Only one of 5 combinations can be a High Pair. Liar's Poker Royal Flush.