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MathNet 2009-part-02 — 175 problems (EN–VI) Question 127

Math Olympiad Vault · MathNet 2009-part-02 — 175 problems (EN–VI)

Question 127

Let $n$ be an arbitrary natural number. Show that there exists a natural number $m$ with the following condition:

The positive integers less than or equal to $m$ that are relatively prime to $m$ can be divided into $n$ parts such that the sum of all numbers in each part is equal.
(proposed by B. Battsengel)