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Posted by on Monday, July 21, 2008 at 6:41pm.

If n letters were put in n envelopes at random, what is the probability that eactlly n-1 of them were in the correct envelopes?

  • Probabiltiy - , Tuesday, July 22, 2008 at 6:04am

    That depends upon how many letters can go into one envelope. If that number is one per envelope, then you cannot have just one in the wrong envelope. The one that is supposed to be in that envelope would also be in a wrong envelope.

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