If a code word is defined to be a sequence of different : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 21 Jan 2017, 07:40

### 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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

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

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Senior Manager
Joined: 02 Dec 2007
Posts: 457
Followers: 2

Kudos [?]: 195 [0], given: 6

If a code word is defined to be a sequence of different [#permalink]

### Show Tags

19 Sep 2008, 09:25
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

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
Intern
Joined: 02 Sep 2008
Posts: 45
Followers: 0

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

Re: code word [#permalink]

### Show Tags

19 Sep 2008, 09:28
I come up with E. It is 6 to 1.
SVP
Joined: 21 Jul 2006
Posts: 1538
Followers: 10

Kudos [?]: 743 [0], given: 1

Re: code word [#permalink]

### Show Tags

19 Sep 2008, 18:17
Nihit 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

I got E as well:

5-letter code: 10*9*8*7*6
4-letter code: 10*9*8*7

Therefore, the ratio is: (10*9*8*7*6)/(10*9*8*7) = 6/1
Director
Joined: 23 May 2008
Posts: 838
Followers: 3

Kudos [?]: 71 [0], given: 0

Re: code word [#permalink]

### Show Tags

19 Sep 2008, 23:12
why do we use permutation here and not combination?
Re: code word   [#permalink] 19 Sep 2008, 23:12
Display posts from previous: Sort by

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

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 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®.