In poker, the probability of each type of 5-card hand can be computed by calculating the proportion of hands of that type among all possible hands. Frequency of 5-card poker · Frequency of 7-card poker · Frequency of 5-card. My local casino runs a special prize for making a Royal Flush (RF) hand in Hold Em poker. The hand does not have to go to showdown, but. When you sit down to a game of Texas Hold 'Em, what are the odds you'll get a royal flush on the flop? Each hand in Hold 'Em is some combination of five cards.