Steven G
Elite Member
- Joined
- Dec 30, 2014
- Messages
- 14,405
I need a hint for this one. The problem is innocently stated but I am having trouble with it.
Suppose n people attend a party and bring a gift for everyone else. All guests put their gift in a big pile and when they leave, they each randomly take n-1 gifts. In how many ways can this be done if no one is to get any of their gifts?
Suppose n people attend a party and bring a gift for everyone else. All guests put their gift in a big pile and when they leave, they each randomly take n-1 gifts. In how many ways can this be done if no one is to get any of their gifts?
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