A problem's source gives insight into the level of answer that an asker is seeking. A question about a problem from Thomas' Calculus is going to have a very different kind of answer when compared to the same problem from Rudin's Principles of Real Analysis. Similarly, knowing what course a student is taking will help to narrow down what kind of answer is expected.
Even better, in my opinion, would be for the asker to actually *motivate* the question and explain why it is interesting, but I was responding to your claim that a lot of questions are asked by people who lack to mathematical m…