Calculate your expected winnings (or losses) if you throw away all but the 4, 5♠, 6♠. You might get a pair, 2 pair, 3-of-a-kind, straight, or nothing. This means you have thrown away the J, K♣. Let R be the set of cards of face value {2,3,7,8,9,10,Q,A} and S be the set of remaining jacks or kings (not the ones we threw away).