DK-GEORGMOHR 2020 Problem 3
Which positive integers satisfy the following three conditions? a) The number consists of at least two digits. b) The last digit is not zero. c) Inserting a zero between the last two digits yields a number divisible by the original number.
Dataset text AI-MO AoPS. Quoted with source.
Official text: Georg Mohr Contest 2020 official paper, page 1.
Solutions
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