I have been trying to ask my doubts through comments section since atleast 30-35 hours but no one responds…

Here are my doubts

- is it possible that a party was of form ABC for n=3 , i.e. all were in good mood ?
- Also what will be the answer if all possible combinations of Parties existed ?.. is it 0 or 1 or something else?

Plss don`t post answer in any form , not even anything close to answer . Just make the problem clear so everybody has a fair chance to solve it .

Thanks…