A rhetorical question is a question, but it expects no answer. The answer is considered obvious so that the question is really a statement being made in the form of a question.
A rhetorical question is a question, but it expects no answer. The answer is considered so obvious that the question is really a statement being made in the form of a question. A real question, on the other hand, is a question where the speaker really desires an answer and is not seeking to make a statement. (GGBB p466 & §169)