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Combinations + Poker Probability. By GMAT Pill.

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Combinations + Poker Probability. By GMAT Pill. [#permalink] New post 15 Nov 2012, 09:29
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Combinations + Poker Probability (pairs, pocket aces)

a Video Lecture by GMAT Pill. A part of the 1,000,000 posts celebration

Combinatorics (nCr) - When does order matter? Poker Probability (what is your chance to get a pair of aces?)

Download a pre-work file with sample questions. Come prepared to the session and Q&A

The PPT deck of the lecture and sample qeustions are available here.

Description to the lecture:

00:00 - Intro

01:00 - Warmup

02:12 - Part 1 Overview: Combinations & Permutations vs Variations

08:35 - Part 1 Details: Picking Teams, Dice, Pocket Pair, Dating

17:21 - Part 2: Apply to GMAT - Word Problem #1

22:13 - Part 2: Apply to GMAT - Word Problem #2

31:34 - Part 2: Apply to GMAT - Word Problem #3

38:04 - Part 3: Poker Probability - Pocket Pair vs Pocket Aces

43:40 - Part 3: Poker Probability - Given Pocket Aces, 3-of-a-Kind?

46:13 - Part 3: Poker Probability - 1-Pair by 5th Flop

49:59 - Part 3: Poker Probability - Full House/Flush

1:00:00 - Conclusion



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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: Combinations + Poker Probability. By GMAT Pill. [#permalink] New post 16 Nov 2012, 07:54
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Re: Combinations + Poker Probability. By GMAT Pill. [#permalink] New post 15 Nov 2012, 14:05
Is there a way for people who don't have a facebook account to access the video?
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Re: Combinations + Poker Probability. By GMAT Pill. [#permalink] New post 15 Nov 2012, 14:09
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Re: Combinations + Poker Probability. By GMAT Pill. [#permalink] New post 16 Nov 2012, 05:50
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BN1989 wrote:
Is there a way for people who don't have a facebook account to access the video?


Hi BN1989,

Yes, we've posted an HD version of the video here:

http://www.gmatpill.com/gmat-practice-t ... ons-lesson

You can post your questions here as well.

Enjoy!

_________________


... and more


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Kudos [?]: 22237 [0], given: 2602

Re: Combinations + Poker Probability. By GMAT Pill. [#permalink] New post 19 Nov 2012, 06:43
Expert's post

Best questions & answers from comments



Dimiter Kraev wrote:
Is it fair to assume that most probability questions show up when 700+?
The GMAT Pill Study Method wrote:
@Dimiter - Probability/Combinatorics is most common at the 700 level, but can also appear in the 600 area. More basic probability questions will be more prevalent at the 600 level while word problems involving choosing teams of committees will be more prevalent at the 700 level..

For those at the 500 to low 600 level, you likely won't see these types of questions. However, if you are shooting for over 700 - you're more likely to see these questions - particularly in word problem format.


Ace Richards wrote:
What about geometry? at what level do these questions show up and how many can e expect?
The GMAT Pill Study Method wrote:
Most geometry questions won't involve combinatorics. However, there are a few in the Official Guide that actually involve both coordinate geometry and combinatorics. So it is possible to see a question that combines both elements.

Of course, you'll only see these if you are consistently getting other quant questions correct and the system continually gives you more and more difficult questions - adding elements of combinatorics - possibly mixing them with other subjects like geometry.

Still the basics in the frameworks of variations vs combinations vs permutations at the beginning of the video are fair game for upper 600 level questions.



For more check: http://www.facebook.com/photo.php?fbid= ... =1&theater

_________________

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

Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 18693
Followers: 3232

Kudos [?]: 22237 [0], given: 2602

Re: Combinations + Poker Probability. By GMAT Pill. [#permalink] New post 17 Jul 2013, 23:11
Expert's post
Re: Combinations + Poker Probability. By GMAT Pill.   [#permalink] 17 Jul 2013, 23:11
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