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MathNet 2013 Question 27

Math Olympiad Vault · MathNet 2013

Question 27

Juarez used the digits $1,2,3,4,5$ to write a five-digit number $\overline{abcde}$ with distinct digits. Without revealing it, he told Luciana:
- $\overline{abc}$ is divisible by $4$;
- $\overline{bcd}$ is divisible by $5$;
- $\overline{cde}$ is divisible by $3$.

Luciana said the number can be determined. Show she is right, that is, find $\overline{abcde}$.