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2019 IMO Problems: Revision history

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21 August 2025

10 September 2020

  • curprev 07:5907:59, 10 September 2020 Muhaboug talk contribs 4,225 bytes +4,225 Created page with "==Problem 1== ''Let <math>\mathbb{Z}</math> be the set of integers. Determine all functions <math>f : \mathbb{Z} \to \mathbb{Z}</math> such that, for all ''integers <math>a</m..."
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