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THIS IS TRICKY!!!!!!!!!

A set of consecutive positive integers beginning with 1 is written on a whitboard. one is erased. the average of the remaining numbers is 35 7/17 . what number was erased? hint ( 1+2+3...+(N-1)+N =...
13:03 Sun 15th Aug 20043 answers, last by Kos 16:43 Mon 16th Aug 2004

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