Register

Recent questions tagged kenneth-rosen-pigeonhole-principle

0 votes
0 answers
1
Rosen
Show that in a group of 10 people (where any two people are either friends or enemies), there are either three mutual friends or four mutual enemies, and there are either three mutual enemies or four mutual friends.
Show that in a group of 10 people (where any two people are either friends or enemies), there are either three mutual friends or four mutual enemies, and there are either...
User Avatar
To see more, click for the full list of questions or popular tags.