Different winning combination have different chances of coming out. The chance of getting Royal Flush is 40,000:1. Only one of 10,000 combinations can be a Straight Flush. Only one of 423 combinations can be a Four of a Kind. 86:1 is a chance of getting a Full House. The chance of getting Flush is 93:1. The chance of getting Straight is 85:1. The chance of getting Three of a Kind is 13:1. Only one of 8 combinations can be a Two Pairs. The chance of getting High Pair is 5:1. Multi-Hand Poker Royal Flush.