You take the four Aces, four $2$'s, and four $3$'s from a standard deck of 52 cards, forming a set of $12$ cards. You then deal all $12$ cards at random to four players, so that each player gets three cards. What is the probability that each player gets an Ace, a $2$, and a $3$?
Getting an ace would have a probability of 4/16, or 1/4.
When someone draws one, one is taken away.
The equation would be: 1/4 times 1/5 times 1/7 times 1/13 = 1/1820.