The Number Properties Guide provides a comprehensive analysis of the properties and rules of integers tested on the GRE. Learn, practice, and master everything from prime products to perfect squares. Each chapter builds comprehensive content understanding by providing rules, strategies and in-depth examples of how the GRE tests a given topic and how you can respond accurately and quickly. The Guide contains 150+ questions: “Check Your Skills” questions in the chapters that test your understanding as you go and “In-Action” problems of increasing difficulty, all with detailed answer explanations.