GMAT™ Official Guide 2021
Your GMAT™ prep begins here. Designed by the makers of the GMAT exam.
Study with confidence. All GMAT™ Official Prep products are the only prep resources containing real GMAT™ questions from past exams. It’s why we are official.
Get comprehensive practice by studying with 1,172 questions across quantitative and verbal reasoning from past GMAT™ exams. Answer explanations are included so that you can study the reasoning behind the answers to help improve your understanding and performance. The questions in each section are organized by difficulty level: easy, medium and hard. Start at the beginning and work your way up to the harder questions as you build upon your knowledge.
The GMAT™ Official Guide 2021 will allow you to:
- LEARN ABOUT THE GMAT™ EXAM – Gain an overview of the exam including the format, content and test-taking strategies.
- GAIN COMPREHENSIVE PRACTICE – Prepare with over 1,172 questions across Quantitative and Verbal Reasoning sections and online.
- Study Answer Explanations – Learn the methods behind the answers with detailed explanations.
- Build Upon Your Knowledge – Practice with questions organized from easiest to hardest.
Plus! Practice online with the GMAT™ Official Guide Online Question Bank
Practice online with the same questions from the book PLUS more than 150 additional online-exclusive questions - included with your purchase. Online practice will allow you to:
- New! Review with online flashcardsto master key concepts to prepare and test with confidence
- Practice with a total of 1,172 practice questions
- Create your own online practice sets
- Filter by fundamental skill and difficulty level
- Track your improvements with performance metrics
- Practice in exam mode to get ready for test day
- Study on the go with the mobile app! Access your data seamlessly between your devices and offline!
The GMAT™ Official Guide 2021 gives you the tools you need to confidently prepare for test day.
This product includes print book with a unique code to access the GMAT™ Online Question Bank and mobile app.
Table of Contents
Letter from the President and CEO, GMAC™ vii
1.0 What is the GMAT™ Exam? 2
1.0 What is the GMAT™ Exam? 3
1.1 Why Take the GMAT™ Exam? 3
1.2 GMAT™ Exam Format 4
1.3 What is the Content of the Exam Like? 6
1.4 Analytical Writing Assessment Section 6
1.5 Integrated Reasoning Section 6
1.6 Quantitative Reasoning Section 7
1.7 Verbal Reasoning Section 7
1.8 What Are the Test Centers Like? 7
1.9 How Are Scores Calculated? 8
2.0 How to Prepare 10
2.0 How to Prepare 11
2.1 How Should I Prepare to Take the Test? 11
2.2 How to Use the GMAT™ Official Guide 11
2.3 How to Use Other GMAT™ Official Prep Products 12
2.4 General Test-Taking Suggestions 12
3.0 Math Review 16
3.0 Math Review 17
3.1 Arithmetic 18
3.2 Algebra 30
3.3 Geometry 38
3.4 Word Problems 50
4.0 Problem Solving 58
4.0 Problem Solving 59
4.1 Test-Taking Strategies 60
4.2 Section Instructions 60
4.3 Practice Questions 62
4.4 Answer Key 103
4.5 Answer Explanations 105
5.0 Data Sufficiency 198
5.0 Data Sufficiency 199
5.1 Test-Taking Strategies 200
5.2 Section Instructions 202
5.3 Practice Questions 204
5.4 Answer Key 228
5.5 Answer Explanations 230
6.0 Reading Comprehension 322
6.0 Reading Comprehension 323
6.1 What is Measured 324
6.2 Test-Taking Strategies 332
6.3 Section Instructions 333
6.4 Practice Questions 334
6.5 Answer Key 397
6.6 Answer Explanations 398
7.0 Critical Reasoning 486
7.0 Critical Reasoning 487
7.1 What is Measured 487
7.2 Test-Taking Strategies 489
7.3 Reasoning Concepts to Know for the GMAT™ Exam 491
7.4 Section Instructions 497
7.5 Practice Questions 498
7.6 Answer Key 548
7.7 Answer Explanations 549
8.0 Sentence Correction 718
8.0 Sentence Correction 719
8.1 Some Comments About How It Works 719
8.2 The Eight Sentence Correction Categories 720
8.3 Study Suggestions 741
8.4 What is Measured 741
8.5 Test-Taking Strategies 742
8.6 Section Instructions 742
8.7 Practice Questions 743
8.8 Answer Key 779
8.9 Answer Explanations 780
9.0 Integrated Reasoning 888
9.0 Integrated Reasoning 889
9.1 What is Measured 890
9.2 Question Types and Test-Taking Strategies 891
9.3 Section Instructions 897
10.0 Analytical Writing Assessment 898
10.0 Analytical Writing Assessment 899
10.1 What is Measured 899
10.2 Test-Taking Strategies 900
10.3 The Directions 900
10.4 GMAT™ Scoring Guide: Analysis of an Argument 901
10.5 Sample: Analysis of an Argument 903
11.0 GMAT™ Official Guide Question Index 908
12.0 GMAT™ Official Guide Online Index 922
Appendix A Answer Sheets 932
Problem Solving Answer Sheet 933
Data Sufficiency Answer Sheet 935
Reading Comprehension Answer Sheet 937
Critical Reasoning Answer Sheet 938
Sentence Correction Answer Sheet 939
