Latest GMAT Official Guide (OG) 2020 – Should you buy?

Latest GMAT Official Guide 2020 (released 2019)

The latest GMAT Official Guide 2020 is available in the market (released in mid-2019, as is the practice every year). OG 2020 has 100 fresh questions compared to the GMAT Official Guide 2019. Should you buy this latest GMAT book? The answer is an unqualified Yes if you do not have any previous edition of the GMAT guides. And before you start using the guide to prepare for the GMAT exam, don't miss these 3 Expert Tips for using GMAT Official Guides 2019 2020 which will improve your learning from the book.

However, many GMAT candidates have already purchased, or have access to, previous versions of the GMAT Official Guide or GMAT OG as it is popularly called, (officially titled as Official Guide for GMAT Review), and are wondering whether it is worth spending on the New GMAT Official Guide OG 2020 edition (book title: Official Guide for GMAT 2020 edition). To make it easier for you to make that decision, we have given below a comparison of the recent editions of the GMAT Official Guides in terms of real past GMAT questions contained in those books and the difference between the various editions of the official GMAT guides..

Latest GMAT Official Guide 2020 edition

  • Total 1007 real past GMAT questions
  • 100 new questions in Quant & Verbal compared to OG 2019
  • 230 new questions in Quant & Verbal compared to OG 2018
  • 352 new questions in Quant & Verbal + 8 new IR questions compared to OG 2017
  • 490 new questions compared to OG 2016
  • 691 new questions compared to OG 2015

GMAT Official Guide 2019 edition

  • Total 907 real GMAT questions
  • 130 new questions in Quant & Verbal compared to OG 2018
  • 252 new questions in Quant & Verbal + 8 new IR questions compared to OG 2017
  • 390 new questions compared to OG 2016
  • 591 new questions compared to OG 2015

GMAT Official Guide 2018 edition

  • Total 907 real GMAT questions
  • 122 new questions in Quant & Verbal + 8 new IR questions compared to OG 2017
  • 260 new questions compared to OG 2016
  • 461 new questions compared to OG 2015

Official Guide for GMAT Review 2017 edition

  • Total 907 real GMAT questions
  • 130 new questions compared to OG 2016
  • 331 new questions compared to OG 2015

Official Guide for GMAT Review 2016 edition

  • Total 907 real GMAT questions.
  • 201 new questions compared to OG 2015

Official Guide for GMAT Review 2015 edition

  • Total 907 real GMAT questions
  • Same as the Official GMAT Guide 13th edition
  • (previously they had 11th edition, 12th edition, 13th edition etc. The 13th edition was converted to OG 2015 edition)

What the above analysis tells us that if you already have the OG 2019 edition, it does not make much sense purchasing the new official GMAT guide 2020 release.

If you have either the 2018 or 2017 editions, then you are looking at over two-thirds of overlapping questions and about 230 or 352 new questions respectively. But remember that the 100 new questions in the GMAT Official Guide 2020 edition are mostly in the Easy question category. So, the money will be better spent purchasing some other Official GMAT Prep Material such as Exam Pack 1 and/or 2, rather than the OG 2020 guide.

But if you have the 2016 edition, then you are looking at 517 overlapping and 490 new questions, Since there are close to 500 new questions, it would definitely be worth purchasing the OG 2020 book.

On the other hand, if you do not have any GMAT Official Guide to refer to, or have the Official Guide for GMAT Review 2015 editions, then there is no doubt that you will have lots to gain by purchasing the new book. Also remember, the overall quality of questions in OG 2016 was a lot better than in 2015, and the trend has continued since. So you are getting not only a substantial number of new questions, but also better quality questions. Over the last few editions of the OG, we are noticing a good improvement in Reading Comprehension questions and in the Medium to Medium-High range of Quantitative questions.

Best of luck for your GMAT Prep!

Blog Post written by:
Murtuza Gadiwala
GMAT 99th percentile | Founder - Sharp Minds

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