This user has asked 3 very similar questions in a short span of time (one of which was an exact duplicate of another older question which I answered).
All three questions seem to variations in the same series of exercises:
He does not seem to be learning from the answers as on each question he asks how to approach the problem, then someone solves it for him, and he moves to the next one.
So, would it be reasonable to close the questions or are those legitimate questions for EE.SE?