A card shop contains 5 birthday cards, 4 holiday cards, and 3 graduation cards. If three cards are purchased at random from the shop, what is the probability that the three cards will be graduation cards? Pick:  A) 1/33  B) 6/264  C) 1/44  D) 1/264  E) 1/1320
It doesn't matter which type of card you choose, so:   Probability of choosing 1st card: 3/12   Probability of choosing 2nd card of the same type: 2/11   Probability of choosing 3rd card of the same type: 1/10   Multiply and you get 1/264   Answer 1/264.
<result>D</result>
A card shop contains 5 birthday cards, 4 holiday cards, and 3 graduation cards. If three cards are purchased at random from the shop, what is the probability that the three cards will be graduation cards?