Question 125
Determine the numbers $\overline{ab}$ for which $\overline{ba} + \overline{ab}$ and $\overline{ba} - \overline{ab}$ are perfect squares.
MathNet 2016-part-03 — 184 problems (EN–VI) Question 125
Math Olympiad Vault · MathNet 2016-part-03 — 184 problems (EN–VI)