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2020 IMO Problems/Problem 3: Revision history

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14 May 2021

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23 September 2020

  • curprev 01:0101:01, 23 September 2020 Epicnumbertheory talk contribs 360 bytes +360 Created page with "Problem 3. There are 4n pebbles of weights 1, 2, 3, . . . , 4n. Each pebble is coloured in one of n colours and there are four pebbles of each colour. Show that we can arrange..."
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