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Manager
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Joined: 27 Jan 2011
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Manager
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Joined: 04 Oct 2010
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Schools:Kellogg
 Q50  V20 GMAT 2: 580  Q49  V20 GMAT 3: 710  Q50  V35
GPA: 3.39
WE 1: Project Engineer (1yr)
WE 2: Analyst(3 yrs)
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Founder
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Joined: 04 Dec 2002
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Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3
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Re: Is OG10 still valid [#permalink]
Expert Reply
Be careful, the OG 10 is very powerful - it has 1,300 questions (compared to 900 in the OG 12).

However, it overlaps with GMAT Prep and PowerPrep and that's an issue if you are planning to take those tests. It is relevant and still does the job (even if the questions are dated).

Final words of caution - don't focus too much on solving the questions but instead spend the time on concepts and strategies....
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Manager
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Joined: 29 Jan 2011
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Re: Is OG10 still valid [#permalink]
I also have OG 9 and OG 11 . What about those ? I know OG 11 has almost most of the questions repeated in OG 12. Also, is there a overlap between Verbal and Quant Review 1st and 2nd Edition
Founder
Founder
Joined: 04 Dec 2002
Posts: 37403
Own Kudos [?]: 73102 [0]
Given Kudos: 18935
Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3
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Re: Is OG10 still valid [#permalink]
Expert Reply
Yes, there is a 60% overlap between verbal and math OG's as far as I remember (but this is not a very common question and I may not remember correctly)

Also see this: gmat-club-guide-to-the-gmat-official-guide-12th-ed-85956.html?fl=menu
GMAT Club Bot
Re: Is OG10 still valid [#permalink]

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