Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 24 May 2017, 09:58

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# 25 Hardest Questions on GMAT Club [List]

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Founder
Joined: 04 Dec 2002
Posts: 14920
Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3.5
Followers: 3952

Kudos [?]: 25127 [31] , given: 4748

25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

12 Dec 2012, 16:20
31
This post received
KUDOS
Expert's post
77
This post was
BOOKMARKED

25 Hardest Questions from the GMAT Club Forum

Are you familiar with the GMAT Club's timer? We have pulled timer results from our database and analyzed every question in the forum. Based on those results, we have compiled a list of the hardest questions in each of the question forums we have. Below I am presenting to you the top 25 questions from each.

 Problem Solving (PS) Rank Title Topics 1 If x is positive, which of the following could be correct Inequalities, Must be True Questions 2 In a room filled with 7 people, 4 people have exactly 1 Combinations, Probability 3 If x > y^2 > z^4, which of the following statements could be Algebra 4 In the infinite sequence A, An = X^(n-1) + X^n + X^(n+1) + X Algebra, Sequences 5 In a village of 100 households, 75 have at least one DVD Overlapping Sets 6 The water level in a rectangular swimming pool measuring 60 Geometry 7 In a certain bathtub, both the cold-water and the hot-water Work/Rate Problems 8 If x=3/4 and y=2/5, what is the value of Roots, Absolute Values/Modules 9 For how many ordered pairs (x, y) that are solutions of the Absolute Values/Modules, Inequalities 10 How many times will the digit 7 be written? Combinations 11 If equation |x/2|+|y/2| = 5 encloses a certain region Absolute Values/Modules, Coordinate Geometry 12 100 people are attending a newspaper conference. 45 of them Overlapping Sets, Min/Max Problems 13 If x is an integer and |1-x|<2 then which of the following Absolute Values/Modules, Must be True Questions 14 Which of the following represents the complete range of x Inequalities, Absolute Values/Modules 15 Coach Miller is filling out the starting lineup for his Combinations 16 If x represents the sum of all the positive three-digit Combinations 17 What is the tenth digit to the right of the decimal point Fractions/Ratios/Decimals 18 x/|x| |a + b| ? Inequalities, Absolute Values/Modules 25 If the sum of the consecutive integers from -42 to n Statistics and Sets Problems

 Data Sufficiency (DS) Rank Title Topics 1 If a, b and c are integers such that b > a, is b+c > a Inequalities 2 |x|=|2y|, what is the value of x-2y? Absolute Values/Modules, Inequalities 3 Store S sold a total of 90 copies of a certain book during Word Problems 4 If x^2 = y + 5, y = z - 2 and z = 2x, is x^3 + y^2 + z Divisibility/Multiples/Factors, Algebra 5 If t is a positive integer and r is the remainder when t^2+5 Remainders 6 Is x > 0? (1) |x + 3| = 4x Absolute Values/Modules, Inequalities 7 If zy < xy < 0, is | x - z | + |x| = |z|? Absolute Values/Modules, Inequalities 8 Is x > y ? (1) x^(1/2)>y (2) x^3>y Exponents/Powers, Roots, Inequalities 9 If m and r are two numbers on a number line, what is the Absolute Values/Modules, Coordinate Geometry, 10 What is the positive integer n? , Number Properties, Divisibility/Multiples/Factors 11 If A n, what is the Remainders 24 If a and b are positive integers divisible by 6, is 6 the Divisibility/Multiples/Factors 25 If x and y are integer, what is the remainder when x^2 + y^2 Remainders

 Critical Reasoning (CR) Rank Title Topics 1 In Patton City, days are categorized as having heavy Conclusion 2 For the writers who first gave feudalism its name, the Must be True 3 Beginning in 1997, high school seniors in State Q have been Conclusion, Numbers & Percent 4 Recently, the research and development departments at major Assumption 5 Editorial:The measures taken by our government to force Assumption 6 In 1986, the city of Los Diablos had 20 days on which air Additional Evidence 7 If one of the effects of a genetic mutation makes a Must be True 8 Health Maintenance Organizations (HMOs).... Weaken, CR Resources 9 The Action-Packed Gaming Company, based on the success of Assumption 10 Some of our federal legislators are opposed to government Weaken 11 Biologists suspect that feathers are modified scales. Assumption 12 For a ten-month period, the total monthly sales of new cars Must be True 13 Doctors in Britain have long suspected that patients who Weaken, 14 In the United States, vacationers account for more than half Must be True 15 Scientists have several rival theories on the causes of Assumptions 16 All bridges built from 1950 to 1960 are in serious need of Must be True 17 Naturally occurring chemicals cannot be newly patented once Must be True 18 It is true of both men and women that those who marry as Strengthen 19 Those who oppose abortion upon demand make the foundation of Assumption 20 In a study of factors affecting employee satisfaction , Conclusion 21 In general, jobs are harder to get in times of economic Strengthen 22 The anticipated retirement of tens of thousands of baby Weaken 23 During a single hour of a pledge drive for a public radio Resolve Paradox 24 Members of the Amazonian Akabe people commonly take an Weaken 25 Certain instruments used in veterinary surgery can be made Additional Evidence, Method of Reasoning

 Sentence Correction (SC) Rank Title Topics 1 The manager at the office supply store believes that the new Comparisons, Parallel Structure 2 Contemporary accounts of the life of Charlemagne, crowned Parallel Structure 3 The recent spate of traffic jams on Beijing-Tibet highway Style and Usage, Subject Verb Agreement 4 Originally a trading port, Hong-Kong, currently estimated to Clauses, Modifiers 5 In some African languages, verbs not only encode the Idioms, 6 The recent floods in Pakistan were caused by an incessant Idioms, Verb Tense/Form 7 The paradox of the Roman empires history is marked by the Parallel Structure, Participle Parallelism 8 Early 16th Century moralist philosophers, particularly in Parallel Structure 9 It has been estimated that the annual cost of water and Diction, Idioms 10 In assessing the problems faced by rural migrant workers, Construction 11 The recent discovery of a red oak tree sap that is Comparisons, Modifiers, Parallel Structure 12 The new proposal will encourage larger transparency about Subject Verb Agreement 13 Regarded by opponents as ineffective and meddlesome Modifiers 14 Supporters of tax breaks that local governments award to Pronouns 15 Beatrix Potter, in her book illustrations, carefully Modifiers 16 Out of the publc's interest in the details of and conflicts Subject Verb Agreement 17 Any medical test will sometimes fail to detect a condition Pronouns, Gramatical Construction 18 Hoping the customers would not carelessly throw too many of Pronouns 19 Recently documented examples of neurogenesis, the production Parallel Structure 20 Scientists calculated that the asteroid, traveling at 46,000 Subject Verb Agreement 21 Deliberately imitating the technique of Louis Armstrong, Modifiers 22 Out of the public's interest in the details of and conflicts Subject Verb Agreement 23 The states three problem areas have seen a gradual decrease Verb Tense/Form, Which/That 24 In good years, the patchwork of green fields that surround Subject Verb Agreement 25 The computer company's present troubles are a result of Modifiers, Construction

Methodology & how we determined difficulty:
We have taken all of the timer results and discarded any results that involved more than 5 mins total time. Then we took the average time it took to answer the question and multiplied it times the percentage of incorrect answers. There are a few assumptions we are making here and results may not be perfect in every individual case, but in an overall picture, this should be a very useful tool for you. We welcome your suggestions for this and other resources.
_________________

Founder of GMAT Club

US News Rankings progression - last 10 years in a snapshot - New!
Just starting out with GMAT? Start here...
Need GMAT Book Recommendations? Best GMAT Books

Co-author of the GMAT Club tests

Last edited by bb on 13 Dec 2012, 00:28, edited 2 times in total.
Edit
Moderator
Joined: 02 Jul 2012
Posts: 1223
Location: India
Concentration: Strategy
GMAT 1: 740 Q49 V42
GPA: 3.8
WE: Engineering (Energy and Utilities)
Followers: 124

Kudos [?]: 1483 [1] , given: 116

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

13 Dec 2012, 02:05
1
This post received
KUDOS
Haha... No Bold Faced CRs in the top 25???
_________________

Did you find this post helpful?... Please let me know through the Kudos button.

Thanks To The Almighty - My GMAT Debrief

GMAT Reading Comprehension: 7 Most Common Passage Types

BSchool Forum Moderator
Joined: 27 Aug 2012
Posts: 1194
Followers: 134

Kudos [?]: 1615 [1] , given: 144

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

13 Dec 2012, 11:43
1
This post received
KUDOS
Wonderful post bb... Kudos man..!

I'll soon go after these and share my thoughts.
_________________
Founder
Joined: 04 Dec 2002
Posts: 14920
Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3.5
Followers: 3952

Kudos [?]: 25127 [1] , given: 4748

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

13 Dec 2012, 11:54
1
This post received
KUDOS
Expert's post
MacFauz wrote:
Haha... No Bold Faced CRs in the top 25???

Yes, it is interesting indeed. if you have a question in particular (a URL) of a bold face CR question that you would like me to research as to the difficulty, I will be happy to.

P.S. Not all of these are super hard questions, some appear easy and just end up being tricky at the end.
_________________

Founder of GMAT Club

US News Rankings progression - last 10 years in a snapshot - New!
Just starting out with GMAT? Start here...
Need GMAT Book Recommendations? Best GMAT Books

Co-author of the GMAT Club tests

Moderator
Joined: 01 Sep 2010
Posts: 3166
Followers: 855

Kudos [?]: 7301 [1] , given: 1063

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

17 Dec 2012, 06:40
1
This post received
KUDOS
bb wrote:
MacFauz wrote:
Haha... No Bold Faced CRs in the top 25???

Yes, it is interesting indeed. if you have a question in particular (a URL) of a bold face CR question that you would like me to research as to the difficulty, I will be happy to.

P.S. Not all of these are super hard questions, some appear easy and just end up being tricky at the end.

People always think that doing super tough hard unbelievable question will achive a great score.

Wrong for two reasons: first of all about 10% of question during the test are really super tough; moreover, is not sure that you will arrive at that point of the test, aka a lower score. An hard question is simply a mid level question wrapped more difficult or with a chain in the reasoning a bit convoluted. All this leads us to the second point

Secondly: if you pick all the quetions at mid upper level (from 600 650/680), you'll know how to solve these questions thinking to your girl friend at the same time;then , you can expect to achive the better score, otherwise do not. People think: I do a 700 level question and then his/her score is 550 why??? and so on and so forth.....

To make a long story short: this set is really really good. if I have time I'll put all the questions in a PDF format.

Thanks BB
_________________
Intern
Joined: 15 Sep 2012
Posts: 18
Followers: 0

Kudos [?]: 2 [1] , given: 36

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

20 Aug 2013, 14:27
1
This post received
KUDOS
16 and 22 in SC are the same question
VP
Status: Been a long time guys...
Joined: 03 Feb 2011
Posts: 1381
Location: United States (NY)
Concentration: Finance, Marketing
GPA: 3.75
Followers: 178

Kudos [?]: 1462 [0], given: 62

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

13 Dec 2012, 01:08
Wow....this is just great.
Great work BB.
_________________
Moderator
Joined: 01 Sep 2010
Posts: 3166
Followers: 855

Kudos [?]: 7301 [0], given: 1063

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

13 Dec 2012, 04:57
I'll dive into as soon as possible.

Great BB
_________________
Current Student
Joined: 27 Jun 2012
Posts: 412
Concentration: Strategy, Finance
Followers: 85

Kudos [?]: 840 [0], given: 184

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

13 Dec 2012, 11:41
Great!

Added to my TO-DO list.
_________________

Thanks,
Prashant Ponde

Tough 700+ Level RCs: Passage1 | Passage2 | Passage3 | Passage4 | Passage5 | Passage6 | Passage7
Reading Comprehension notes: Click here
VOTE GMAT Practice Tests: Vote Here
PowerScore CR Bible - Official Guide 13 Questions Set Mapped: Click here
Looking to finance your tuition: Click here

Manager
Joined: 13 Feb 2012
Posts: 146
Location: Italy
Concentration: General Management, Entrepreneurship
GMAT 1: 560 Q36 V34
GPA: 3.1
WE: Sales (Transportation)
Followers: 4

Kudos [?]: 7 [0], given: 85

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

13 Dec 2012, 12:40
Just what I was looking for, thanks!
_________________

"The Burnout" - My Debrief

Kudos if I helped you

Andy

Intern
Status: Life begins at the End of your Comfort Zone
Joined: 31 Jul 2011
Posts: 47
Location: Tajikistan
Concentration: General Management, Technology
GPA: 3.86
Followers: 2

Kudos [?]: 28 [0], given: 4

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

14 Dec 2012, 12:54
Great one BB! That would take my score as well as that of a number of other aspired GMATers a long way
_________________

God loves the steadfast.

Senior Manager
Status: Final Lap
Joined: 25 Oct 2012
Posts: 287
Concentration: General Management, Entrepreneurship
GPA: 3.54
WE: Project Management (Retail Banking)
Followers: 3

Kudos [?]: 332 [0], given: 85

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

15 Dec 2012, 14:25
thanks bb for posting this !!
_________________

KUDOS is the good manner to help the entire community.

"If you don't change your life, your life will change you"

Founder
Joined: 04 Dec 2002
Posts: 14920
Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3.5
Followers: 3952

Kudos [?]: 25127 [0], given: 4748

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

20 Aug 2013, 18:22
Thanks! Interesting that they are 5 spots apart. Amount 10k questions that's pretty darn precise!

Thank you. I will keep it as is for now. Will revise the list in the next few weeks.

Posted from my mobile device.
_________________

Founder of GMAT Club

US News Rankings progression - last 10 years in a snapshot - New!
Just starting out with GMAT? Start here...
Need GMAT Book Recommendations? Best GMAT Books

Co-author of the GMAT Club tests

Intern
Joined: 27 Aug 2016
Posts: 26
Location: India
Concentration: Entrepreneurship, Marketing
GPA: 3.87
WE: Sales (Internet and New Media)
Followers: 0

Kudos [?]: 5 [0], given: 12

Re: 25 Hardest Questions on GMAT Club [List] [#permalink]

### Show Tags

25 Nov 2016, 20:19
Hi bb
i found some questions on this post a bit challenging to do in 2 minute duration,but it was fun to solve most questions.
Please add some more if you find the time.
Also I encountered a problem in the link,
When I tried to access Q12 and Q16 of CR "Must be True" category I got a message stating
Quote:
You are not authorised to read this forum.

I am relatively new to the club so am not aware of rules of access.
Anyways it was a good drill
Thanx for the great post
Re: 25 Hardest Questions on GMAT Club [List]   [#permalink] 25 Nov 2016, 20:19
Similar topics Replies Last post
Similar
Topics:
41 Hardest GMAT Questions from 2014 0 06 Jan 2015, 22:27
33 Most Bookmarked Topics on GMAT Club [List] 3 01 May 2017, 20:37
37 Hardest GMAT Questions of 2013 2 12 Jan 2014, 22:34
1 GMAT Club Material Downloads-Bare Essentials List 1 28 Mar 2011, 18:17
GMAT CLUB mailing list 3 03 Oct 2007, 15:38
Display posts from previous: Sort by

# 25 Hardest Questions on GMAT Club [List]

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

Moderator: HiLine

 Powered by phpBB © phpBB Group and phpBB SEO Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.