|AoPSWiki Article of the Day|
This page is a small experiment to see if it's a better way to organize an amount of information that is sure to become very large.--MCrawford 16:34, 28 June 2006 (EDT)
A couple of clocks for modulo 5 and modulo 12 would make a great addition to the early part of this article.--MCrawford 19:35, 28 June 2006 (EDT)
“What is the last digit of if there are 1000 7s as exponents and only one 7 in the middle? We can solve this problem using mods. This can also be stated as .”
It seems to me that the expression simplifies to , no?