olymmath

AIME 2012a Problem 1

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Find the number of positive integers with three not necessarily distinct digits, abcabc, with a≠0a \neq 0 and c≠0c \neq 0 such that both abcabc and cbacba are multiples of 44.

Dataset text AIME 1983 to 2026. Quoted with source.

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40

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