Art of Problem Solving
AoPS Online
Math texts, online classes, and more
for students in grades 5-12.
Visit AoPS Online ‚
Books for Grades 5-12 Online Courses
Beast Academy
Engaging math books and online learning
for students ages 6-13.
Visit Beast Academy ‚
Books for Ages 6-13 Beast Academy Online
AoPS Academy
Small live classes for advanced math
and language arts learners in grades 2-12.
Visit AoPS Academy ‚
Find a Physical Campus Visit the Virtual Campus

User:Stefanp

Revision as of 09:59, 28 November 2010 by Stefanp (talk | contribs)

1) Is 12345678987654321 a perfect square? 

<geogebra>197c90967b9cd68356d80fb22878ce00009ece29</geogebra>
Retrieved from "https://artofproblemsolving.com/wiki/index.php?title=User:Stefanp&oldid=36105"