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

It is currently 16 Apr 2014, 08:11

Hurry Up:

Last day of registration for Dealing with a Ding - Webinar by GMATClub and Admissionado Consulting.


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

A researcher plans to identify each participant in a certain

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
User avatar
Joined: 08 Jul 2004
Posts: 606
Followers: 2

Kudos [?]: 13 [0], given: 0

GMAT Tests User
A researcher plans to identify each participant in a certain [#permalink] New post 05 Apr 2005, 14:17
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

54% (02:12) correct 45% (01:21) wrong based on 92 sessions
A researcher plans to identify each participant in a certain medical experiment with a code consisting of either a single letter or a pair of distinct letters written in alphabetical order. What is the least number of letters that can be used if there are 12 participants, and each participant is to receive a different code?

A. 4
B. 5
C. 6
D. 7
E. 8

OPEN DISCUSSION OF THIS QUESTION IS HERE: a-researcher-plans-to-identify-each-participant-in-a-certain-134584.html
[Reveal] Spoiler: OA

_________________

Regards, S

Kaplan GMAT Prep Discount CodesKnewton GMAT Discount CodesVeritas Prep GMAT Discount Codes
2 KUDOS received
Manager
Manager
User avatar
Joined: 04 Mar 2005
Posts: 107
Location: NYC
Followers: 2

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

GMAT Tests User
Re: PS combinations [#permalink] New post 05 Apr 2005, 19:31
2
This post received
KUDOS
saurya_s wrote:
A researcher plans to identify each participant in a certain medical experiment with a code consisting of either a single letter or a pair of distinct letters written in alphabetical order. What is the least number of letters that can be used if there are 12 participants, and each participant is to receive a different code?
A. 4
B. 5
C. 6
D. 7
E. 8


Ans = B (5)

Use A, B, C,D& E as the 5 codes.
5 participants can each get one of the 5 codes.
For the remaining, use 2 code combinations from the 5 codes
10 such combinations are possible.
Hence 5 codes are suff.
Senior Manager
Senior Manager
Joined: 19 Feb 2005
Posts: 493
Location: Milan Italy
Followers: 1

Kudos [?]: 7 [0], given: 0

GMAT Tests User
 [#permalink] New post 06 Apr 2005, 02:48
ssap is right. B:5
A B C D E and the first 5 are done
AB AC AD AE
BC BD BE
CD CE
DE
(no more than 4!)
Director
Director
User avatar
Joined: 31 Aug 2004
Posts: 611
Followers: 2

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

GMAT Tests User
 [#permalink] New post 06 Apr 2005, 03:56
Agree with 5.
Set of answers provided above explains perfectly why 6 is overestimated.
Director
Director
Joined: 29 Nov 2012
Posts: 936
Followers: 11

Kudos [?]: 157 [0], given: 543

Re: A researcher plans to identify each participant in a certain [#permalink] New post 30 Dec 2012, 02:01
How to solve this one?
_________________

Click +1 Kudos if my post helped...

Amazing Free video explanation for all Quant questions from OG 13 and much more http://www.gmatquantum.com/og13th/

GMAT Prep software What if scenarios gmat-prep-software-analysis-and-what-if-scenarios-146146.html

Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 17283
Followers: 2867

Kudos [?]: 18328 [0], given: 2345

GMAT Tests User CAT Tests
Re: A researcher plans to identify each participant in a certain [#permalink] New post 30 Dec 2012, 06:42
Expert's post
Re: A researcher plans to identify each participant in a certain   [#permalink] 30 Dec 2012, 06:42
    Similar topics Author Replies Last post
Similar
Topics:
New posts Q2: A researcher plans to identify each participant in a nakib77 4 22 Oct 2005, 04:53
New posts Each participant in a certain study was assigned a sequence dinesh8 9 06 May 2006, 05:01
This topic is locked, you cannot edit posts or make further replies. New 1 Experts publish their posts in the topic A researcher plans to identify each participant in a certain girikorat 9 17 Nov 2006, 10:07
New posts A researcher palns to identify each participant in a certain puma 3 10 May 2008, 22:36
Popular new posts 15 Experts publish their posts in the topic A researcher plans to identify each participant in a certain sarb 32 17 Jun 2012, 03:13
Display posts from previous: Sort by

A researcher plans to identify each participant in a certain

  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®.