No good as a practice exam or study aid.
Its sold as a quiz, not an outline.  It is not a quiz.  Most all of the "questions" are actually just an instruction to define a term from the pmbok.  Its not at all format for the exam.  I'm warning that the $13 invested in to this is actually negative for those studying for the exam, use the valuable time before your exam studying elsewhere.
I use this to supplement another math book and I see a big difference in my daughter's memory. I just wish I thought of this sooner.