Additional Page Problem

This is a clever puzzle from the 1986 AIME problems.

“The pages of a book are numbered 1 through n. When the page numbers of the book were added, one of the page numbers was mistakenly added twice, resulting in an incorrect sum of 1986. What was the number of the page that was added twice?”


See the Additional Page Problem for the solution.

Leave a Reply

Your email address will not be published. Required fields are marked *