www.TheMathWebSite.com       Enrichment Problems MG
      Answer is at Bottom of Page.


      Four Letters :

A secretary types 4 letters to 4 people and addresses the 4 envelopes.
She inserts the letters at random, each in a different envelope.
What is the probability that exactly 3 letters will go into the right envelopes?



















Copyright © 1994-. All rights reserved.    www.TheMathWebSite.com       MG3


----------------- Cut or Fold Page Back Along This Line -----------------------

      Four Letters :     ANSWER

The probability is zero.
If 3 letters match the envelopes, then so will the fourth.