Revision history of "2006 SMT/General Problems/Problem 3"

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  • (cur | prev) 20:45, 15 October 2013DANCH (talk | contribs). . (607 bytes) (+607). . (Created page with "==Problem== After a typist has written ten letters and had addressed the ten corresponding envelopes, a careless mailing clerk inserted the letters in the envelopes at random, on...")