iran-konkur 2013 Q150

iran-konkur · Other · konkur-riazi_1392 Number Theory Quadratic Diophantine Equations and Perfect Squares
150. The four-digit number $\overline{aabb}$ is a perfect square. The remainder when the two-digit number $\overline{ab}$ is divided by 13 is which of the following?
(1) $9$ (2) $10$ (3) $11$ (4) $12$
\textbf{150.} The four-digit number $\overline{aabb}$ is a perfect square. The remainder when the two-digit number $\overline{ab}$ is divided by 13 is which of the following?

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(1) $9$ \hfill (2) $10$ \hfill (3) $11$ \hfill (4) $12$

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