1998 OIM Problems/Problem 3
Problem
Find the minimum natural number 
with the following property: among any different numbers belonging to the set 
you can choose four different numbers 
, 
, 
, 
, such that 
.
~translated into English by Tomas Diaz. ~orders@tomasdiaz.com
Solution
This problem needs a solution. If you have a solution for it, please help us out by adding it.
