Answer
all sets of 5 cards chosen from a standard deck of 52 playing cards, in which there are three cards of one denomination and two of another.
Work Step by Step
The event "a full house" is the set of all possible poker hands with a full house. (A poker hand is a set of 5 cards chosen from a standard deck of 52 playing cards, a full house is three cards of one denomination and two of another)