The Official Guide for GMAT Review, 13th Edition" is the definitive study resource for the GMAT exam, with over 1 million copies sold worldwide. This guide is uniquely developed by the creators of the GMAT test itself, ensuring authentic and reliable preparation material. It includes more than 900 actual questions from past GMAT exams, providing extensive practice. A key feature is the companion website, which offers an additional 50 Integrated Reasoning questions to help test-takers prepare for this specific section. The book also incorporates a diagnostic section, designed to assist users in assessing their strengths and weaknesses, thereby allowing them to strategically focus their test-prep efforts for maximum effectiveness. This is truly "The Official Guide" from the Graduate Management Admission Council.