There are several winning combinations in vdeo poker games and the chances of getting them are also different. Only one of 40,000 combinations can be a Royal Flush. 10,000:1 is a chance of getting a Straight Flush. The chance of getting Four of a Kind is 423:1. 86:1 is a chance of getting a Full House. Only one of 93 combinations can be a Flush. Only one of 85 combinations can be a Straight. Only one of 13 combinations can be a Three of a Kind. 8:1 is a chance of getting a Two Pairs. 5:1 is a chance of getting a High Pair. Online Straight Poker.