Magyar Information Contest Journal Articles

# Problem C. 1266. (January 2015)

C. 1266. Solve the equation $\displaystyle 5(2n+1)(2n+3)(2n+5) =\overline{ababab}$, where $\displaystyle n$ denotes a positive integer, $\displaystyle a$ and $\displaystyle b$ stand for different digits, and $\displaystyle \overline{ababab}$ is a six-digit number.