My statistics textbook mentioned the following problem: "A secretary addresses
50 different letters and envelopes to 50 different people, but the letters are
randomly mixed before being put into envelopes. What is the probability that at
least one letter gets into the correct envelope?" It said that the probability
was 0.632 but simply said that the solution was "way beyond" the scope of the
text and did not give a place to look for further information. Could someone
explain how to find this result or point me to a web site that explains it?
Thanks,
Chris
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