MathDB

B.Math 2008-Combinatorics.

Source:

April 16, 2012

Problem Statement

Let

C=\{ (i,j)|i,j

integers such that

0\leq i,j\leq 24\}

How many squares can be formed in the plane all of whose vertices are in

C

and whose sides are parallel to the

X-

axis and

Y-

axis?