olymmath

AIME 1986 Problem 6

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The pages of a book are numbered 11_{}^{} through nn_{}^{}. When the page numbers of the book were added, one of the page numbers was mistakenly added twice, resulting in an incorrect sum of 19861986_{}^{}. What was the number of the page that was added twice?

Dataset text AIME 1983 to 2026. Quoted with source.

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33

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Locator aime/1986/p6 · Tag 4XB4FVC1XM · Edit this page on GitHub · Keys: j next, k previous