Each row of a seating arrangement seats 7 or 8 people. Forty-six people are to be seated. How many rows seat exactly 8 people if every seat is occupied?
By the Chinese Remainder Theorem, there are six rows that seat exacty 8 people.
Sorry, it was incorrect. I have one more try, however.
This is not that hard Riemann, what have you tried for yourself?
I was going to give you a hint but it is too simple for that.