This document discusses a party invitation problem where 8 friends are invited but 2 friends do not want to see each other. The document provides 2 answers: 1) If the 2 friends do not come together, there are 6 ways to invite 5 of the 8 friends since the 2 uninvited friends cannot both attend. 2) If the 2 friends always come as a pair, there are only 5 ways to invite them since they count as 1 invitation.