Considered the gold-standard in GMAT test prep, Manhattan GMATâ€™s ten strategy guides are the first books on the market to be aligned with the 13th Edition GMAC Official Guide. Fully updated and revised to deal with recent changes to the GMAT, they were designed with a content-based approach.The Number Properties Guide delves into all the characteristics of numbers tested on the GMAT, covering both simple and complicated concepts. Using the fundamental techniques and nuanced strategies developed in this guide, students will be able to tackle even the toughest GMAT problems involving prime numbers, consecutive integers, and many other topics. Unlike other guides that attempt to convey everything in a single tome, the Number Properties Strategy Guide is designed to provide deep, focused coverage of one specialized area tested on the GMAT. As a result, students benefit from thorough and comprehensive subject material, clear explanations of fundamental principles, and step-by-step instructions of important techniques. In-action practice problems and detailed answer explanations challenge the student, while topical sets of Official Guide problems provide the opportunity for further growth. Used by itself or with other Manhattan GMAT Strategy Guides, the Number Properties Guide will help students develop all the knowledge, skills, and strategic thinking necessary for success on the GMAT. Purchase of this book includes one year of access to Manhattan GMATâ€™s online computer-adaptive practice exams and Number Properties Question Bank. All Manhattan GMAT Strategy Guides are aligned with the 13th edition GMAC Official Guide.