A code is made from a sequence of 4 letters. How many : PS Archive
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 16 Jan 2017, 23:52

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

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

A code is made from a sequence of 4 letters. How many

Author Message
Manager
Joined: 03 Jul 2005
Posts: 192
Location: City
Followers: 1

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

A code is made from a sequence of 4 letters. How many [#permalink]

Show Tags

09 Oct 2006, 23:00
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A code is made from a sequence of 4 letters.

How many different codes could be made using the letters from the word area?
Director
Joined: 05 Feb 2006
Posts: 898
Followers: 3

Kudos [?]: 107 [0], given: 0

Show Tags

09 Oct 2006, 23:34
12?

recently i started using the new approach to these kind of problems... trying to get used to it....

AreA....

4!/2!=12

The key here is to see how many same letters the word has....

For example for word "SmIlIeS" you can have: 7!/(2!*2!)=1260 different codes....
Director
Joined: 06 Sep 2006
Posts: 743
Followers: 1

Kudos [?]: 36 [0], given: 0

Show Tags

10 Oct 2006, 11:38
A code is made from a sequence of 4 letters.

How many different codes could be made using the letters from the word area?

Not that combos and perms are my strengths but is this really a combo? I reckon it is a permutation problem

Intern
Joined: 02 Sep 2006
Posts: 14
Followers: 0

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

Show Tags

10 Oct 2006, 13:42
it's 12, total outcome is 4! = 24, but need to account for repeats because of AA, so 24/2 = 12
10 Oct 2006, 13:42
Display posts from previous: Sort by