Yes. And what's wrong with any of those things? It's a give and take - the interviewer will say "Ok, let's stipulate it is full length and you can't tamp them" and "Oh, that's interesting, assuming some sort of variance in size, estimate a range instead of a number", etc. That's one of the reasons made-up questions are better than "real" questions, the imaginative tit-for-tat is a good thing, and is harder with "real" questions.