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

It is currently 20 May 2013, 21:27
Customize  |  Hide

Search
Register
New posts
Unanswered

Q11: If a code word is defined to be a sequence of different

  Question banks Downloads My Bookmarks Reviews  
  Oldest Best Reply
Search for:
 
Print view
First unread post
Author Message
TAGS:
Senior Manager
Senior Manager
Joined: 18 Jun 2007
Posts: 300
Followers: 2

Kudos [?]: 12 [0], given: 0

GMAT Tests User
Q11: If a code word is defined to be a sequence of different [#permalink] New post 02 Jul 2007, 13:00
Q11:
If a code word is defined to be a sequence of different letters chosen from the 10 letters A, B, C, D, E, F, G, H, I, and J, what is the ratio of the number of 5-letter code words to the number of 4-letter code words?

A. 5 to 4
B. 3 to 2
C. 2 to 1
D. 5 to 1
E. 6 to 1
Senior Manager
Senior Manager
User avatar
Joined: 28 Feb 2007
Posts: 317
Followers: 1

Kudos [?]: 20 [0], given: 0

GMAT Tests User
 [#permalink] New post 02 Jul 2007, 13:11
Permutation. E.

10A5/10A4=6/1 In other words:

=[10!/(10-5)!]/[10!/(10-4)!]=6/1 thus 6:1
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jul 2004
Posts: 5134
Location: Singapore
Followers: 9

Kudos [?]: 87 [0], given: 0

GMAT Tests User
 [#permalink] New post 02 Jul 2007, 20:17
# of ways to arrange 5 items from 10 = 10P5
# of ways to arrange 4 items from 10 = 10P4

Ratio = 10P5/10P4 = 6/1
  [#permalink] 02 Jul 2007, 20:17
    Similar topics Author Replies Last post
Similar
Topics:
 New posts If a code word is defined to be a sequence of different M8 3 25 Apr 2006, 12:21
New posts If a code word is defined to be a sequence of different GMATCUBS21 6 23 Jun 2006, 15:35
New posts If a code word is defined to be a sequence of different gmatornot 4 23 Aug 2006, 20:36
New posts If a code word is defined to be a sequence of different marcodonzelli 3 19 Jan 2008, 06:09
New posts If a code word is defined to be a sequence of different tarek99 4 14 Apr 2008, 13:09
Display posts from previous: Sort by

Q11: If a code word is defined to be a sequence of different

  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