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MathNet 2016-part-07 — 182 problems (EN–VI) Question 13

Math Olympiad Vault · MathNet 2016-part-07 — 182 problems (EN–VI)

Question 13

How many three-digit numbers are there with non-zero digits which have the following property: after any permutation of its digits one obtains three-digit number which is divisible by $4$?