Poker probability frequencies are calculated in a manner similar to that shown for 5-card hands, except additional complications arise due to the extra two cards in the 7-card poker hand. The total number of distinct 7-card hands is formula_3. It is notable that the probability of a no-pair hand is "less" than the probability of a one-pair or two-pair hand. The Ace-high straight flush or royal flush is slightly more frequent (4324) than the lower straight flushes (4140 each) because the remaining two cards can have any value; a King-high straight flush, for example, cannot have the Ace of its suit in
Straight Flush Straight Flush Straight Flush was the name of a B-29 Superfortress (B-29-36-MO 44-27301, Victor number 85) that participated in the atomic bomb attack on Hiroshima on August 6, 1945. Assigned to the 393d Bomb Squadron, 509th Composite Group, it was used as a weather reconnaissance plane and flew over the city before the attack to determine if conditions were favorable for a visual drop. Pilot Claude Eatherly later expressed remorse, received psychiatric hospitalization, and engaged in anti-nuclear activism, which may be the origin of urban legends that Eatherly, "Enola Gay" pilot Paul Tibbets, or other members of the two planes'