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