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Analysis of Most Difficult Question Categories/Tags in Forum

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Analysis of Most Difficult Question Categories/Tags in Forum [#permalink]

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Analysis of Most Difficult Questions and Categories


We have collected 400 of the hardest questions discussed on GMAT Club (you can find the list of 100 of them here: Hardest GMAT Questions).
While collecting them, we have looked at the tags and categories to see if we can spot some patterns or make any conclusions - this post is about what we have learned.



Observation #1: Quant questions in the OG are not Representative

20% of the hardest PS questions and 40%!!! of the DS questions were from GMAT Prep and only 13% and 9% respectfully were from the Official Guide. That tells me that GMAT Prep is pretty tricky and continues to surprise test takers while the Official Guide is not as representative of the difficult questions you are to encounter on the GMAT

Observation #2: Arithmetic is harder and more important than Probability

15% of the 100 hardest PS questions were arithmetic and 31% of DS were inequalities, ahead of combinations, which were 9% in PS. Did you know that around 50% of the questions you encounter on the GMAT will be arithmetic questions? If you are short on time and choosing whether to spend the next 3 days in probability or in arithmetic, choose arithmetic.

Observation #3: Parallel Structure is a challenge in SC

SC is the most common question type on the Verbal portion of the test and most issues come up with Parallel Structure, Modifiers, and Subject Verb agreement - make sure you ace these 3 topics before your appointment.

Observation #4: Verbal questions in the OG are Representative!

For Verbal, the difference between OG and GMAT Prep is not as significant as in the quant, which indicates that OG is a pretty good source for your verbal practice and it is very representative of the GMAT. (Here of course we had to make an assumption that GMAT Prep is representative of the actual GMAT, which I hope you caught since Assumptions are the most problematic area in CR). Anyway, you want to value and savor those Verbal questions as no other source has them as good, as hard, and as original.


Top 10 Hardest Question Areas by Question Type

(click to see the questions related to each topic/tag). Freq = Frequency of the tag/category in the top 100

Problem Solving
#Tag NameFreq
1Source: GMAT Prep20
2Source: Manhattan GMAT15
3Arithmetic15
4Must or Could be True Questions15
5Source: Official Guide13
6Word Problems13
7Work/Rate Problems12
8Absolute Values/Modules11
9Number Properties9
10Combinations9



Data Sufficiency
#Tag NameFreq
1Source: GMAT Prep40
2Inequalities31
3Absolute Values/Modules21
4Source: Manhattan GMAT12
5Number Properties10
6Source: Official Guide9
7Coordinate Geometry9
8Divisibility/Multiples/Factors9
9Algebra9
10Geometry8



Critical Reasoning
#Tag NameFreq
1Assumption21
2Weaken16
3Source: LSAT15
4Conclusion11
5Method of Reasoning9
6Must be True8
7Inference7
8Evaluate Argument6
9Resolve Paradox6
10Strengthen6



Sentence Correction
#Tag NameFreq
1Parallel Structure18
2Modifiers17
3Subject Verb Agreement14
4Comparisons12
5Pronouns12
6Source: GMAT Prep12
7Construction11
8Idioms11
9Source: Official Guide10
10Verb Tense/Form8




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Re: Analysis of Most Difficult Question Categories/Tags in Forum [#permalink]

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New post 10 Jan 2013, 16:09

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Re: Analysis of Most Difficult Question Categories/Tags in Forum [#permalink]

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New post 11 Jan 2013, 10:35
Excellent observations bb..Really helpful :) Kudos

Could you please let us know if we have any consolidated distinct collections of that 400 hardest questions discussed on GMAT Club?

Appreciate your reply.
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KUDOS please, if you like the post or if it helps :-)

Kudos [?]: 1961 [0], given: 152

Re: Analysis of Most Difficult Question Categories/Tags in Forum   [#permalink] 11 Jan 2013, 10:35
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