The Official Guide for GMAT Review, 11th Edition （800题）
The Official Guide for GMAT Verbal Review （300题）
The Official Guide for GMAT Quantitative Review （300题）
三本OG及官方模考软件GMATPrep里面的题目互不重合（the Official Guide for GMAT® Review, 11th Edition, the Official Guide for GMAT® Quantitative Review, the Official Guide for GMAT® Verbal Review, and GMAT® Prep.
The Official Guide for GMAT Review, 11th Edition （USD 36.95 ）
The only study guide with 800 real GMAT® questions—and their answers—by the creators of the test. In addition to the questions and answers, this guide features:
NEW diagnostic section that helps you assess where to focus your test-prep efforts
NEW organization of questions in order of difficulty to save you study time
a comprehensive math review covering the topics tested on the GMAT® exam (arithmetic, algebra, geometry, and word problems)
approximately 270 Analytical Writing Assessment topics
The Official Guide for GMAT® Review, 11th Edition contains 800 retired GMAT® questions, with thorough explanations. Answering questions that have appeared on the GMAT® exam before will give you experience with the types of questions that appear on the test. This Guide will help you learn what you need to know to answer the questions correctly.
The Official Guide for GMAT Quantitative Review （USD 16.95）
This Guide offers 300 real GMAT® questions, with answers and explanations, to help you focus your math skils in the following areas:
Arithmetic
Algebra
Geometry
Problem Solving
Data Sufficiency
The Official Guide for GMAT® Quantitative Review will help you solve equations, interpret data, coordinate geometry, and determine probability with assurance and ease. This targeted review helps you get the most out of you study time and improves your familiarity with the kind of questions found on the GMAT® exam.
The Official Guide for GMAT Verbal Review （USD 16.95 ）
This Guide offers 300 real GMAT® questions, with answers and explanations, to help you focus your verbal skils in the following areas:
Reading Comprehension
Critical Reasoning
Sentence Correction
Analytical Writing Assessment
The Official Guide for GMAT® Verbal Review focuses on your ability to read and comprehend written material, to reason and evaluate arguments, and to correct written material. This targeted review will help you get the most out of you study time and prepare you for the GMAT® exam.