7
Part of 2012 JBMO ShortLists
Problems(2)
Square!
Source:
2/4/2015
Let be a square of side length , and points on the sides and respectively such that . Can the set be partitioned into two subsets and of two elements each , so that each one has the sum of his elements a positive integer?
Do not use Zsigmondy!
Source:
2/4/2015
Find all for which
modular arithmetic