Maths Olympiad Prep

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Number theory Difficulty 3.0 AMC 10/12 Prove it United Kingdom

An integer is said to be chunky if it consists only of non-zero digits by which it is divisible when written in base 10. For example, the number 936936 is Chunky since it is divisible by 99, 33 and 66. How many chunky integers are there between 1313 and 113113?

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