Find all School-related info fast with the new School-Specific MBA Forum
Learn more about the recent changes... close

It is currently 19 May 2013, 13:28
Customize  |  Hide

Search
Register
New posts
Unanswered

a rectangular floor measures 2 by 3 meters. there are 5

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
CEO
CEO
User avatar
Joined: 21 Jan 2007
Posts: 2797
Location: New York City
Followers: 5

Kudos [?]: 132 [0], given: 4

GMAT Tests User
a rectangular floor measures 2 by 3 meters. there are 5 [#permalink] New post 05 Nov 2007, 09:49
a rectangular floor measures 2 by 3 meters.
there are 5 white, 5 black and 5 yellow parquet blocks available.
Each block measures 1*1 meter.
In how many different color patterns can the floor be parqueted?
Senior Manager
Senior Manager
Joined: 06 Mar 2006
Posts: 498
Followers: 6

Kudos [?]: 48 [0], given: 1

GMAT Tests User
 [#permalink] New post 05 Nov 2007, 14:36
ok, the area of the floor is 2*3=6 and the area of each block is 1*1=6
so there must be 6 blocks total.
As for the color combination; there are 3 different colors
For the first block, there will be 3 choice
2nd block, three color choice
3rd, 4th, and 5th all have 3 color choice
the 6th one will end up with 2 color choice because each color has only 5 pieces.
So it will be 3*3*3*3*3*2=486 different color patterns.
Manager
Manager
Joined: 01 Nov 2007
Posts: 84
Followers: 0

Kudos [?]: 2 [0], given: 0

 [#permalink] New post 09 Nov 2007, 20:29
How would you solve this with Permutation/Combination?

Thanks
Director
Director
Joined: 09 Aug 2006
Posts: 776
Followers: 1

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

GMAT Tests User
Re: Area [#permalink] New post 10 Nov 2007, 01:04
bmwhype2 wrote:
a rectangular floor measures 2 by 3 meters.
there are 5 white, 5 black and 5 yellow parquet blocks available.
Each block measures 1*1 meter.
In how many different color patterns can the floor be parqueted?


Can someone please tell me why we cannot approach this problem as follows:
We have a total of 15 tiles. We need 6 to fill the floor. The way we can choose 6 tiles out of 15 is 15C6 = 5005.

What is wrong with this logic? I'm assuming that this approach does not account for color combinations? If so, how can we tweak this approach to solve the problem?

I'm pathetic w/ perms & combs so thanks for your help.
Re: Area   [#permalink] 10 Nov 2007, 01:04
    Similar topics Author Replies Last post
Similar
Topics:
 New posts A rectangular floor measure 2 by 3 meters, there are 5 rkatl 8 12 Aug 2006, 17:48
New posts EXPERTS_POSTS_IN_THIS_TOPIC A rectangular floor measures 2 by 3 meters. There are 5 sondenso 1 23 May 2008, 01:45
New posts A rectangular floor measures 2 by 3 meters. There are 5 arjtryarjtry 6 02 Aug 2008, 03:03
New posts A rectangular floor measures 2 by 3 meters. There are 5 aaron22197 1 02 Aug 2008, 23:48
New posts A rectangular floor measures 2 by 3 meters. There are 5 arjtryarjtry 2 28 Aug 2008, 20:16
Display posts from previous: Sort by

a rectangular floor measures 2 by 3 meters. there are 5

  Question banks Downloads My Bookmarks Reviews  
Print view
First unread post

Moderators: Bunuel, VeritasPrepKarishma

Search for:


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®.

Main navigation

GMAT Resources

Partners

MBA Resources

www.gmac.com|www.mba.com