Comment Comment by carl_corder Another interesting and related topic are Ramsey numbers. R(3,3)=6 which means:"In any party of six people either at least three of them are (pairwise) mutual strangers or at least three of them are (pairwise) mutual acquaintances"https://en.wikipedia.org/wiki/Theorem_on_friends_and_strange... parent carl_corder 10 years ago
"In any party of six people either at least three of them are (pairwise) mutual strangers or at least three of them are (pairwise) mutual acquaintances"
https://en.wikipedia.org/wiki/Theorem_on_friends_and_strange...