Howdy, folks. This isn't really a problem for any math class, but I just needed it figured out to help me with my preparation for a history exam.

Let me explain.

There will be 9 questions were I will have to define a term in about a paragraph (who or what? when? significance?). We will be required to write on 6 of the 9. She has given us 28 terms, any of which may appear on the exam. For the sake of sheer study efficiency (I'm a busy bunny this week), how many of those 28 can I omit? Thanks in advance.