For many GMAT test-takers, the topics of Statistics, Combinatorics, and Probability loom as the most challenging content areas tested on the exam, particularly because it s not uncommon for students to have not encountered these subjects in a high school or college curriculum. This lesson, accordingly, builds from the basic elements of each content area with a thorough Skillbuilder section full of definitions, drill problems, and explanations. From there, students complete a GMAT-specific lesson that progresses to the most advanced applications used by the exam to challenge 700+ scorers. And to practice these skills and strategies, the lesson offers over 100 GMAT-style practice problems, each with a detailed explanation of how to employ the lessons from the book to successfully navigate these questions on test day.