Choose the denomination for the three cards with the same denomination in any of 13 ways. Choose a different denomination for the pair in any of the remaining 12 ways. Choose the suits for the three cards any of "4 suits choose 3" or 4C3 ways. Choose the suits for the pair any of "4 suits choose 2" or 4C2 ways. Answer: 13×12×(4C3)×(4C2) = 13×12×4×6 = 3744 ways to have a full house. Edwin