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# GMAT OG Difference between editions

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Intern
Joined: 30 Nov 2017
Posts: 24
GMAT OG Difference between editions  [#permalink]

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23 Jul 2018, 23:38
Hi Experts,

I'll sit for GMAT in another 10 days. During my preparation, I used OG 13th edition. However, I recently found this thread at GMAT Club here https://gmatclub.com/forum/the-official-guide-for-gmat-review-242995.html. This is OG 18. Should I also practice all questions from OG 18 as well ?

What is the difference between level of questions in subsequent editions ?

Thanks
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Re: GMAT OG Difference between editions  [#permalink]

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24 Jul 2018, 14:21
Hi MSGmat1,

With each new edition of the Official Guide, approximately 10% - 15% of the questions are 'replaced'; the OG13 and GMAT2015 were the exact same book, so there have been 4 'new' books released since then (one per year, including the GMAT2019). By extension, many of the practice questions that appeared in the OG13 have been cycled out over the years, but that doesn't make those questions less meaningful. In simple terms, new content helps to sell the new books.

In one of your prior posts (here: https://gmatclub.com/forum/confused-whe ... l#p2082423), we discussed how using a 'book heavy' study plan might limit your improvement. Since it's been about 1 month since then, I'd like to know more about how you've been studying during that time:

1) What study materials have you used during that time?
2) How have you scored on EACH of your CATs (including the Quant and Verbal Scaled Scores for EACH)?

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Re: GMAT OG Difference between editions &nbs [#permalink] 24 Jul 2018, 14:21
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# GMAT OG Difference between editions

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