A. In Knock Rummy, all face cards are worth 10, and all other cards are worth their face value.
B. In Oklahoma Gin the first up card determines the maximum knock value.
C. In Knock Rummy you can go out even though not all of your cards are used in melds.
D. In conventional Gin Rummy a Queen-King-Ace meld is worth more than a 4-5-6 meld.