olymmath

HMMT 2007 U4

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A sequence consists of the digits 122333444455555…122333444455555 \ldots such that the each positive integer nn is repeated nn times, in increasing order. Find the sum of the 4501 st and 4052 nd digits of this sequence.

Dataset text NuminaMath olympiads. Quoted with source.

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Locator hmmt/2007/u4 · Tag T55QRH50KJ · Edit this page on GitHub · Keys: j next, k previous