<p>Re #221: No, it does appear on the exams (or at least it did–I think that CB might have removed the section in which it used to appear). The correct answer was that it is not possible to tell from the information given.</p>
<p>There was an entire section on comparing the entry in column A with the entry in column B. Choices were: A larger, B larger, A and B equal, or can’t tell.</p>