Problem A. 445. (January 2008)
A. 445. Prove that for every prime number p and integer r there exists a nonnegative integer n for which .
Deadline expired on February 15, 2008.
5 students sent a solution. 5 points: Korándi Dániel, Lovász László Miklós, Nagy 235 János, Wolosz János. 4 points: Tomon István.