Suppose you play a game of cards in which only four cards are dealt from a standard deck of 52 cards. How many ways are there to obtain three of a kind? (3 cards of the same rank and 1 card of a different rank, for example 3 tens and 1 queen.) Could someone help me with how to do this problem? I tried doing 4C3 x 13 x 52C1, which was obviously wrong. :/ Any help would be appreciated.