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

It is currently 17 Sep 2014, 19:55

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

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

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
User avatar
Joined: 08 Jun 2004
Posts: 502
Location: Europe
Followers: 1

Kudos [?]: 10 [0], given: 0

GMAT Tests User
If a code word is defined to be a sequence of different [#permalink] New post 25 Apr 2006, 11:21
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

100% (02:27) correct 0% (00:00) wrong based on 0 sessions
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

Please explaine your answer.
Manager
Manager
avatar
Joined: 23 Jan 2006
Posts: 193
Followers: 1

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

GMAT Tests User
 [#permalink] New post 25 Apr 2006, 14:06
E. 6 to 1

5P10/6P10 =

10*9*8*7*6
--------------
10*9*8*7

=6
VP
VP
User avatar
Joined: 29 Dec 2005
Posts: 1351
Followers: 6

Kudos [?]: 28 [0], given: 0

GMAT Tests User
Re: PS: sequence (code words) [#permalink] New post 25 Apr 2006, 21:43
M8 wrote:
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

Please explaine your answer.

since order matters, use permutation.

= 10p5/10p4 = [(10x9x8x7x6x5!)/5!]/[(10x9x8x7x6!)/6!) = 6
Director
Director
User avatar
Joined: 08 Jun 2004
Posts: 502
Location: Europe
Followers: 1

Kudos [?]: 10 [0], given: 0

GMAT Tests User
 [#permalink] New post 26 Apr 2006, 09:19
Great job guys, OA is E.
  [#permalink] 26 Apr 2006, 09:19
    Similar topics Author Replies Last post
Similar
Topics:
If a code word is defined to be a sequence of different goalsnr 3 01 Jun 2008, 12:22
If a code word is defined to be a sequence of different tarek99 4 14 Apr 2008, 12:09
If a code word is defined to be a sequence of different marcodonzelli 3 19 Jan 2008, 05:09
If a code word is defined to be a sequence of different gmatornot 4 23 Aug 2006, 19:36
If a code word is defined to be a sequence of different GMATCUBS21 6 23 Jun 2006, 14:35
Display posts from previous: Sort by

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

  Question banks Downloads My Bookmarks Reviews Important topics  


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®.