Is the answer 0?
There are five unmarked envelopes on a table, each with a letter for a different person. If the mail is randomly distributed to these five people, with each person getting one letter, what is the probability that exactly four people get the right letter?

Question

anonymous · Answer

Because if one envelope is given to the wrong person, wouldn't another person also have to get the wrong envelope?

anonymous · Answer

If someone can get 2 letters, then no
If not, yeah, I believe 0 is right

anonymous · Answer

nevermind, I see, it should be 0

anonymous · Answer

Just making sure, I'll try 0....

anonymous · Answer

Yup, it's right, thanks for confirming :P

anonymous · Answer

no problem :)