This is the only official study guide from the creators of the test and delivers more than 900 retired GMAT questions and answer explanations and a 100 - question diagnostic exam to help focus your test preparation efforts. NEW to The Official Guide for GMAT Review 2015: - Access to the online Question Bank including more than 900 practice questions of all types with answers and explanations, math review, essay topics, and a diagnostic test, as well as access to 50 online integrated reasoning questions. - Exclusive access to videos from real test takers and GMAC staff who share insight and tips on GMAT preparation.