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no 2 Blablabla numbers exist such one of them divides the other.

Source: Portugal OPM 2002 p4

May 19, 2024
number theorydividesDigits

Problem Statement

The Blablabla set contains all the different seven-digit numbers that can be formed with the digits 2,3,4,5,6,72, 3, 4, 5, 6, 7 and 88. Prove that there are not two Blablabla numbers such that one of them is divisible by the other.
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