I don't want to link to a specific question to avoid singling people out and to avoid making assumptions about specific questions, but I think people posting questions directly from problem sets is a common occurrence.
Problem set-style questions have some nice properties. They're generally short, self-contained, neither too easy nor completely open, and encourage you to use a particular skill.
There's a lot of discussion already on the site's policy around asking homework questions; my question is about answering homework questions and interacting with folks who might be asking a homework question.
My question boils down to: what sorts of things are appropriate to do as an answerer when you encounter a question that might be a homework question?
Are we permitted to ask people directly whether they were assigned a particular problem?
Are we permitted to ask people change their post to a related problem that they specifically weren't assigned? Many problem sets have practice problems that are explicitly labeled as such.
Are we permitted to come up with an example problem ourselves in an answer, pose it, and answer it in the answer in lieu of answering the original question if it looks like a homework question?