Find all School-related info fast with the new School-Specific MBA Forum

It is currently 23 Aug 2014, 02:12

Close

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

There are 3 red chips and 2 blue ones. When arranged in a

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
Senior Manager
Senior Manager
User avatar
Joined: 22 Dec 2009
Posts: 365
Followers: 10

Kudos [?]: 201 [1] , given: 47

GMAT ToolKit User GMAT Tests User
Re: Combinations [#permalink] New post 14 Feb 2010, 09:06
1
This post received
KUDOS
bmwhype2 wrote:
There are 3 red chips and 2 blue ones.
When arranged in a row, they form a certain color pattern, for example RBRRB. How many color patterns?

10
12
24
60
100


\frac{5!}{3! * 2!} = 10 ... A
_________________

Cheers!
JT...........
If u like my post..... payback in Kudos!! :beer

|Do not post questions with OA|Please underline your SC questions while posting|Try posting the explanation along with your answer choice|
|For CR refer Powerscore CR Bible|For SC refer Manhattan SC Guide|


~~Better Burn Out... Than Fade Away~~

Manager
Manager
User avatar
Joined: 02 Jan 2010
Posts: 135
Followers: 3

Kudos [?]: 4 [0], given: 3

Re: Combinations [#permalink] New post 08 Sep 2010, 02:53
bmwhype2 wrote:
There are 3 red chips and 2 blue ones.
When arranged in a row, they form a certain color pattern, for example RBRRB. How many color patterns?

10
12
24
60
100


This could be put in a format RRRBB. So total ways of choosing is 5! and since there are 3 R and 2 B, putting the R/B differently within each color pattern does not change anything so we need to remove them. So the formula is 5!/(3!2!) = 10

:)
_________________

Regards
Ganesh
Class of 2012
Great Lakes Institute of Management
http://greatlakes.edu.in

Intern
Intern
avatar
Joined: 24 Feb 2012
Posts: 33
Followers: 0

Kudos [?]: 6 [0], given: 18

Re: There are 3 red chips and 2 blue ones. When arranged in a [#permalink] New post 24 Feb 2012, 12:07
Using MGMAT's anagram technique, ATLANTA is can be rearranged \frac{7!}{(3!)(2!)} ways....coz of 3As and 2Ts.
Applying the same technique here:
RRRBB can be arranged in \frac{5!}{(3!)(2!)} ways
=10
Intern
Intern
avatar
Joined: 24 May 2012
Posts: 13
Concentration: Entrepreneurship, International Business
Followers: 0

Kudos [?]: 0 [0], given: 1

Re: There are 3 red chips and 2 blue ones. When arranged in a [#permalink] New post 06 Jun 2012, 10:25
Answer would be 5!/2!3!
5! for the permutation of number of ways it can be arranged. 2! and 3! for similar arrangements of Red and Black chips as no distinction factor between chips is mentioned i.e. all Red chips are identical and all black chips are identical too.

Regards Vadehra
_________________

AMAT VICTORIA CURAM
Victory loves Prepration.

+1 kudos if you think I have helped you.

Intern
Intern
User avatar
Joined: 02 Apr 2012
Posts: 35
Location: Argentina
Concentration: Entrepreneurship, Finance
WE: Consulting (Accounting)
Followers: 0

Kudos [?]: 17 [0], given: 106

GMAT ToolKit User
Re: There are 3 red chips and 2 blue ones. When arranged in a [#permalink] New post 09 Jul 2013, 14:53
My answer:

C^5_2 * C^3_3 = 10

The 2 blue placed from the slot 1 to 5 and the remaining 3 placed in the rest 3 slots.
_________________

Encourage cooperation! If this post was very useful, kudos are welcome ;)
"It is our attitude at the beginning of a difficult task which, more than anything else, will affect It's successful outcome" William James

Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 19052
Followers: 3374

Kudos [?]: 24556 [0], given: 2680

Re: There are 3 red chips and 2 blue ones. When arranged in a [#permalink] New post 09 Jul 2013, 15:12
Expert's post
Maxirosario2012 wrote:
My answer:

C^5_2 * C^3_3 = 10

The 2 blue placed from the slot 1 to 5 and the remaining 3 placed in the rest 3 slots.


Discussed here: m09-72702.html

Questions to practice:
gordon-buys-5-dolls-for-his-5-nieces-the-gifts-include-two-95836.html
12-easy-pieces-or-not-126366.html#p1033932
in-how-many-ways-can-the-letters-of-the-word-permutations-be-94381.html
how-many-ways-can-the-letters-in-the-word-common-be-arranged-147677.html
a-nickel-a-dime-and-2-identical-quarters-are-arranged-59417.html
how-many-different-6-letter-sequences-are-there-that-consist-96468.html
in-how-many-different-ways-can-the-letters-a-a-b-91460.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.


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

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Re: There are 3 red chips and 2 blue ones. When arranged in a   [#permalink] 09 Jul 2013, 15:12
    Similar topics Author Replies Last post
Similar
Topics:
4 Experts publish their posts in the topic A box contains 4 red chips and 2 blue chips. If two chips ar tejal777 4 29 Oct 2009, 01:15
Experts publish their posts in the topic There are 8 red chips and 2 blue ones. When arranged in a ro RJAGmat 10 10 Oct 2009, 20:03
red and blue chips ritula 2 18 Mar 2009, 01:35
1 There are 3 red chips and 2 blue chips. When arranged in a sondenso 4 10 May 2008, 17:41
One red bottle and three blue bottles are to be arranged in GMATT73 5 04 May 2005, 05:13
Display posts from previous: Sort by

There are 3 red chips and 2 blue ones. When arranged in a

  Question banks Downloads My Bookmarks Reviews Important topics  

Go to page   Previous    1   2   [ 26 posts ] 



cron

GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

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®.