DK-GEORGMOHR 2021 Problem 2
Georg has a -sided die with the numbers and . He rolls the die times and records the result of each roll on a board, so that eventually numbers are written on it. Georg notices that the average of the numbers is an integer. Is it possible that each of the numbers and appears at least three times on Georg's board?
Dataset text AI-MO AoPS. Quoted with source.
Official text: Georg Mohr Contest 2021 official paper, page 1.
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