Personal opinion: This question you're being asked to answer is dumb. My opinion applies here too: http://www.mathhelpforum.com/math-he...questions.html.
As dumb as they may be, they are still questions that I have to be familiar with. The study guide doesn't allow me to critic the question, just be familiar with it and answer it. Because these are wierd, thats why I have a difficult time trying to find the answer or even understand the question half the time.