This question is motivated by thisthis comment.
Recently I see more an more questions which explicitly asks for solution to given class problems. This happens mostly before exams period. It looks like the person who asks for this solution doesn't even try to solve it by itself, not mention about usage of LaTeX formatting and description what one has try.
So the overall proposition is: maybe we should downvote question which seems to be copy paste from problems sets without any contribution from person who asks?