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# Advanced Topic: Probability and Combinations Questions With Solutions

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20 Sep 2010, 00:04
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Advanced Topic: Probability and Combinations Questions With Solutions.

Collected by Bunuel
Solutions by Bunuel
From http://gmatclub.com

These are hand-picked Probability and Combinations Questions from the GMAT Club forum.

All questions have detailed solutions (mine) with various tips and tricks.
All questions have links to the discussions on GMAT Club forum in case of any questions.

Source of the questions:
GMAT Club;
GMAT Prep;
MGMAT;
GMAT forums;
etc.

Attachment:
Probability and Combinations.doc [316 KiB]

Theory on Combinations: math-combinatorics-87345.html

DS questions on Combinations: search.php?search_id=tag&tag_id=31
PS questions on Combinations: search.php?search_id=tag&tag_id=52

Theory on probability problems: math-probability-87244.html

All DS probability problems to practice: search.php?search_id=tag&tag_id=33
All PS probability problems to practice: search.php?search_id=tag&tag_id=54

This is the third part of the tough questions with solutions, this time PS Probability and Combinations Questions.
DS questions at: 700-gmat-data-sufficiency-questions-with-explanations-100617.html
PS questions at: tough-problem-solving-questions-with-solutions-100858.html
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15 Aug 2011, 05:13
1 basic question though..are these questions relevant wrt the GMAT type questions or are these random questions that have interested you..
my question is primarily for Inequalities,700+ DS questions and P&C questions..

Thanks,
LC
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11 Oct 2011, 01:30
Awesome collection!! Thanks
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Thanks,
GC24

Please click Kudos ,if my post helped you

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17 Oct 2011, 03:33
The Question on Denise : Q. No.2
In my Opinion has a simpler solution than the one stated in the document.

We shall look at it in the following way :
P = {1- (Probability of getting that One right combination in the 75 trials) }

P = 1 -{ C(75,1) / C(4000,1) }
P = 157/160

Option C.
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07 Nov 2011, 08:37
Thanks. Great questions.
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14 Mar 2012, 15:36
Thank you for this resource! Very helpful.
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23 Apr 2012, 17:24
thank you... this is one of my weaker points on the GMAT. This will come in handy. Thanks again.
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04 Feb 2013, 01:46
Bunuel wrote:
Hardest Area Questions: "Probability and Combinations Questions With Solutions".

This is the third part of the tough questions with solutions, this time PS Probability and Combinations Questions.
DS questions at: 700-gmat-data-sufficiency-questions-with-explanations-100617.html
PS questions at: tough-problem-solving-questions-with-solutions-100858.html

Hope it helps.

Hi Bunuel,
This is an awesome collection man followed by great explanations...Kudos !

Could you please let me know whether there are any further CONSOLIDATED COLLECTION of questions in you sig.(although apparently I don't find any other consolidated one...) or anywhere in the forum (which have been reviewed by you/bb/walker or any other experts) on 'Probability and Combinations' especially for 700+ category ?

It would of great help if you kindly let me know whether any discussion on the followings are available in the forum or not (as referred in the GMAT Club Math book):
1.The Official Guide,Quantitative 2th Edition: PS #79; PS #160
2.The Official Guide, 11th Edition: DT #4; DT #7; PS #10; PS #64; PS #173; PS #217; PS #231; DS #82; DS #114;

As I don't have the OG11 and Quant OG 2,so please share the links,if any.
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04 Feb 2013, 03:48
debayan222 wrote:
Bunuel wrote:
Hardest Area Questions: "Probability and Combinations Questions With Solutions".

This is the third part of the tough questions with solutions, this time PS Probability and Combinations Questions.
DS questions at: 700-gmat-data-sufficiency-questions-with-explanations-100617.html
PS questions at: tough-problem-solving-questions-with-solutions-100858.html

Hope it helps.

Hi Bunuel,
This is an awesome collection man followed by great explanations...Kudos !

Could you please let me know whether there are any further CONSOLIDATED COLLECTION of questions in you sig.(although apparently I don't find any other consolidated one...) or anywhere in the forum (which have been reviewed by you/bb/walker or any other experts) on 'Probability and Combinations' especially for 700+ category ?

It would of great help if you kindly let me know whether any discussion on the followings are available in the forum or not (as referred in the GMAT Club Math book):
1.The Official Guide,Quantitative 2th Edition: PS #79; PS #160
2.The Official Guide, 11th Edition: DT #4; DT #7; PS #10; PS #64; PS #173; PS #217; PS #231; DS #82; DS #114;

As I don't have the OG11 and Quant OG 2,so please share the links,if any.

DS Question Directory by Topic and Difficulty: ds-question-directory-by-topic-difficulty-128728.html
PS Question Directory by Topic and Difficulty: gmat-ps-question-directory-by-topic-difficulty-127957.html

All OG13 questions with solutions: the-official-guide-quantitative-question-directory-143450.html
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04 Feb 2013, 04:21
Bunuel wrote:
debayan222 wrote:
Bunuel wrote:
Hardest Area Questions: "Probability and Combinations Questions With Solutions".

This is the third part of the tough questions with solutions, this time PS Probability and Combinations Questions.
DS questions at: 700-gmat-data-sufficiency-questions-with-explanations-100617.html
PS questions at: tough-problem-solving-questions-with-solutions-100858.html

Hope it helps.

Hi Bunuel,
This is an awesome collection man followed by great explanations...Kudos !

Could you please let me know whether there are any further CONSOLIDATED COLLECTION of questions in you sig.(although apparently I don't find any other consolidated one...) or anywhere in the forum (which have been reviewed by you/bb/walker or any other experts) on 'Probability and Combinations' especially for 700+ category ?

It would of great help if you kindly let me know whether any discussion on the followings are available in the forum or not (as referred in the GMAT Club Math book):
1.The Official Guide,Quantitative 2th Edition: PS #79; PS #160
2.The Official Guide, 11th Edition: DT #4; DT #7; PS #10; PS #64; PS #173; PS #217; PS #231; DS #82; DS #114;

As I don't have the OG11 and Quant OG 2,so please share the links,if any.

DS Question Directory by Topic and Difficulty: ds-question-directory-by-topic-difficulty-128728.html
PS Question Directory by Topic and Difficulty: gmat-ps-question-directory-by-topic-difficulty-127957.html

All OG13 questions with solutions: the-official-guide-quantitative-question-directory-143450.html

Thanks bunuel..

Can you give any idea on the above highlighted part ?
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04 Feb 2013, 04:26
I think that all these questions were already discussed on the forum, so you could try to search.
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08 Feb 2013, 09:59
Bunuel wrote:
I think that all these questions were already discussed on the forum, so you could try to search.

Bunuel,
Actually I don't have either of OG Quantitative 2th Edition or OG 11th Edition..So it's bit tough for me to search this individual question..Not only these but also all the questions(from these two books) referred by you/bb in GMAT Club Math book.

So,can you please let me know if there is any particular thread in the forum that contains the link to the discussions of ALL questions from OG Quantitative 2th Edition or OG 11th Edition..?

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24 Feb 2013, 09:00
Hello Bunuel, Appreciate your help so far. Do you have a similar list consolidated for Weighted Avg problem types?
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24 Feb 2013, 10:08
debayan222 wrote:
Bunuel wrote:
I think that all these questions were already discussed on the forum, so you could try to search.

Bunuel,
Actually I don't have either of OG Quantitative 2th Edition or OG 11th Edition..So it's bit tough for me to search this individual question..Not only these but also all the questions(from these two books) referred by you/bb in GMAT Club Math book.

So,can you please let me know if there is any particular thread in the forum that contains the link to the discussions of ALL questions from OG Quantitative 2th Edition or OG 11th Edition..?

bb/Bunuel- any information on this guys?

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21 Mar 2013, 12:38
Thanks Bunuel! great job!
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06 Apr 2013, 05:03
Hi Bunuel, Please tag this forum with quantitative and Problem Solving. This will make the search on your valuable inputs easier.
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09 May 2013, 01:41
Bunuel wrote:
prashantbacchewar wrote:
Thanks Bunuel.

Is there any document which will explain me Probability and Combinatrics.?

Check Probability and Combinatorics chapters of Math Book:
math-probability-87244.html
math-combinatorics-87345.html

Hope it helps.

Hi banuel,

Is there any documents where concepts and approach methods of inequalities explained ? I am looking for it for a long time but haven't found one.

Regards
kabilan.K
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09 May 2013, 01:43
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kabilank87 wrote:
Bunuel wrote:
prashantbacchewar wrote:
Thanks Bunuel.

Is there any document which will explain me Probability and Combinatrics.?

Check Probability and Combinatorics chapters of Math Book:
math-probability-87244.html
math-combinatorics-87345.html

Hope it helps.

Hi banuel,

Is there any documents where concepts and approach methods of inequalities explained ? I am looking for it for a long time but haven't found one.

Regards
kabilan.K

Solving inequalities:
x2-4x-94661.html#p731476
inequalities-trick-91482.html
data-suff-inequalities-109078.html
range-for-variable-x-in-a-given-inequality-109468.html?hilit=extreme#p873535
everything-is-less-than-zero-108884.html?hilit=extreme#p868863
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10 Jul 2013, 00:17
Bumping for review*.

*New project from GMAT Club!!! Check HERE

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21 Nov 2013, 01:33
Bunuel wrote:
sandeep800 wrote:
thanx for that bunuel!!wish u could have posted answer instead if links!!we need to connect to net evry time we wanaa see a solution..anyways good doc for P& C

Every question has a detailed solution with answers. So that's not true.

All questions have links to the discussions on Gmat Club forum in case of any questions.

Do You have such collection for Modulus Question?
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21 Nov 2013, 02:18
honchos wrote:
Bunuel wrote:
sandeep800 wrote:
thanx for that bunuel!!wish u could have posted answer instead if links!!we need to connect to net evry time we wanaa see a solution..anyways good doc for P& C

Every question has a detailed solution with answers. So that's not true.

All questions have links to the discussions on Gmat Club forum in case of any questions.

Do You have such collection for Modulus Question?

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Re: Advanced Topic: Probability and Combinations Questions With Solutions   [#permalink] 21 Nov 2013, 02:18

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