For people who have taken the PTCB exam, what is the breakdown of the exam. For example, approximately what percentage of the exam is involved in math and what percentage covers generic drugs. What is considered passing? Finally, has anyone found these books helpful or knows of any decent review book. 1) Prentice Hall Health's Question and Answer Review for the Pharmacy Technician (2nd Edition) (Prentice Hall SUCCESS! Series) (Paperback) 2) Mosby's Review for the PTCB Certification Examination (Mosby's Review Series) (Paperback) by James J. Mizner. 3) The Pharmacy Technician: A Comprehensive Approach (Paperback) by Jahangir Moini.