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MathNet 2004 — Part 02 Question 64

Math Olympiad Vault · MathNet 2004 — Part 02

Question 64

Find all four digit numbers $A$ such that
$$
\frac{1}{3} A+2000=\frac{2}{3} \bar{A}
$$
where $\bar{A}$ is the number with the same digits as $A$, but written in opposite order. (For example, $\overline{1234}=4321$.)