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Advanced Topic: Probability and Combinations Questions With Solutions

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Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 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.


DOWNLOAD:
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Probability and Combinations.doc [316 KiB]
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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
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 20 Sep 2010, 08:01
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
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 20 Sep 2010, 08:13
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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.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 20 Sep 2010, 08:36
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.

OOPSSSS i am so sorryyyy bunuel :( although i did saw doc questions but after seeing discussed at link thought we need to go to club to see answer discussions..i take my words back!! :)
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 21 Sep 2010, 02:13
As always, Thanks a Ton Bunuel. Always look forward to Questions posted by you :D
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 21 Sep 2010, 02:40
Thanks Bunuel.

Is there any document which will explain me Probability and Combinatrics.?
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 21 Sep 2010, 02:51
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.


Thanks man...

great work ..keep going...
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 21 Sep 2010, 03:47
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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.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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25 extra-hard Quant Tests

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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 21 Sep 2010, 19:32
Thank you Bunuel! +1
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 23 Sep 2010, 05:37
Thanks....great work
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 23 Sep 2010, 18:47
thanks. excellent..
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 26 Sep 2010, 11:12
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



Thnx B...those links are grt resource!!!

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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 11 Nov 2010, 12:29
This is what exactly I was looking for. Is there any way we can get tagged questions in Document format to download?
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 06 Dec 2010, 21:28
Bunuel, you're the man.
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 25 Dec 2010, 08:59
Thanks Bunuel! What's the source for these questions? Any of them from GMATPrep or any other CATs?
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 25 Dec 2010, 11:03
Expert's post
gmatdelhi wrote:
Thanks Bunuel! What's the source for these questions? Any of them from GMATPrep or any other CATs?


These questions are from various sources and yes, some are from CAT's (GMAT prep, ...).
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 25 Dec 2010, 20:03
Bunuel wrote:
gmatdelhi wrote:
Thanks Bunuel! What's the source for these questions? Any of them from GMATPrep or any other CATs?


These questions are from various sources and yes, some are from CAT's (GMAT prep, ...).



Thanks...so do you suggest I go through these questions only after I've gone through the CATs I have?
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23rd Jan '11 -- MGMAT Practice Test #3 : 670 (Q45 V36)
19th Jan '11 -- GMATPrep#1 v.1 : 710 (Q49 V37)
15th Jan '11 -- GMATPrep#1 : 720 (Q47 V42)
11th Jan '11 -- MGMAT Practice Test #2 : 740 (Q47 V44)
6th Jan '11 -- Kaplan#2 : 620 (Q40 V35)
28th Dec '10 -- PowerPrep#1 : 670 (Q47 V35)
30th Oct '10 -- MGMAT Practice Test #1 : 660 (Q45 V35)
12th Sept '10 -- Kaplan Free Test : 610 (Q39 V37)
6th Dec '09 -- PR CAT #1 : 650 (Q44 V37)
25th Oct '09 -- GMATPrep#1 : 620 (Q44 V34)

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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 25 Dec 2010, 22:46
This is an excellent initiative. Great work, Bunuel.
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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 26 Dec 2010, 01:51
Bunuel wrote:
gmatdelhi wrote:
Thanks...so do you suggest I go through these questions only after I've gone through the CATs I have?


Yes.


Ok! Will do...!!!!
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Read about my GMAT prep at http://gmatting.blogspot.com/
1st Feb '11 -- Actual GMAT : 730 (Q48 V42) AWA 6.0

My Practice GMAT Scores
29th Jan '11 -- GMATPrep#2 : 700 (Q47 V38)
23rd Jan '11 -- MGMAT Practice Test #3 : 670 (Q45 V36)
19th Jan '11 -- GMATPrep#1 v.1 : 710 (Q49 V37)
15th Jan '11 -- GMATPrep#1 : 720 (Q47 V42)
11th Jan '11 -- MGMAT Practice Test #2 : 740 (Q47 V44)
6th Jan '11 -- Kaplan#2 : 620 (Q40 V35)
28th Dec '10 -- PowerPrep#1 : 670 (Q47 V35)
30th Oct '10 -- MGMAT Practice Test #1 : 660 (Q45 V35)
12th Sept '10 -- Kaplan Free Test : 610 (Q39 V37)
6th Dec '09 -- PR CAT #1 : 650 (Q44 V37)
25th Oct '09 -- GMATPrep#1 : 620 (Q44 V34)

If you feel like you're under control, you're just not going fast enough.
A goal without a plan is just a wish.
You can go higher, you can go deeper, there are no boundaries above or beneath you.

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Re: Advanced Topic: Probability and Combinations Questions With Solutions [#permalink] New post 27 Jan 2011, 22:27
thanks , this is the area which creates a bit of trouble .
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Re: Advanced Topic: Probability and Combinations Questions With Solutions   [#permalink] 27 Jan 2011, 22:27
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