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