The gmat mentor
By your side from fundamentals to mastery.
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By Your Side: The only GMAT program with a holistic plan adaptable to your needs — the next best thing to working with a live tutor​​
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Fundamentals: Simple lessons that walk through explanations from your point of view — making the most difficult concepts accessible​​
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Mastery: Stuffed with deep, comprehensive coverage of all content and strategies — giving you the confidence to defeat any problem​
Book now available for purchase.​
SAMPLE CHAPTERS
Is The GMAT Mentor: Quant and Data Insights right for you? Try these free sample chapters to find out.
1 & 2. INTRODUCTION
5. DATA INSIGHTS 1: FIVE STEPS
10. STATISTICS
3. PREPARATION: THE BASE
6. DATA SUFFICIENCY 1: FOUR MORE
11. MINDSET, STRATEGY & TACTICS: THE THREE PILLARS
4. PROBLEM SOLVING 1: FOUR STEPS
9. FRACTIONS & FRIENDS
24. OVERLAPPING SETS & WEIGHTED AVERAGES
ABOUT the author
​Mark Glenn
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20+ years experience teaching the GMAT / Executive Assessment
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Coached over 1,000 students to reach or exceed their goal scores
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Co-authored Veritas Prep GMAT curriculum
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790 official GMAT score
This book calmed my test anxiety.
A friend recommended Mark's book and I really like how his style made me feel more at ease and definitely less anxious about the test. The problems feel extremely realistic and the structure was logical. Now I feel like I have a plan to beat the Quant and Data Insights section. Just know that this book doesn't cover the Verbal section of the test. I definitely would have loved to hear his insights on the Verbal section, too.
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- Kerry R.
Best GMAT / EA Prep book!
Highly recommend this book for anyone studying for the GMAT or EA. I used this while prepping to eventually be accepted into Columbia business school.
Mark is an expert tutor and has years of experience in the field. I highly recommend this book for anyone looking to save time studying for the exam and I also highly recommend booking some tutoring sessions with Mark. He is awesome and the problems are 1:1 what are covered on the real exam!
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- Kathleen B.
Actually helpful!
I’ve worked through a handful of test-prep books at this point, and this is the first one that actually made these concepts click for me. Instead of just dumping formulas or giving surface-level explanations, the author breaks down the logic behind each question type in a way that’s easy to follow. I never felt lost and saw some real improvement in my score!
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- Hana F.