It is currently 21 Nov 2017, 05:48

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.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

M is the length of the sequence of digits that are duplicated in an in

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Manager
Manager
avatar
Joined: 16 May 2011
Posts: 203

Kudos [?]: 98 [0], given: 37

Concentration: Finance, Real Estate
GMAT Date: 12-27-2011
WE: Law (Law)
GMAT ToolKit User
M is the length of the sequence of digits that are duplicated in an in [#permalink]

Show Tags

New post 06 Jul 2011, 13:20
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

67% (00:41) correct 33% (00:45) wrong based on 12 sessions

HideShow timer Statistics

M is the length of the sequence of digits that are duplicated in an infinite decimal fraction. For example, for 1/9 (0.111111), M = 1 and for 1/11 (0.090909...), M = 2 (09 repeats itself). Of the five following answers, which has the greatest M?

A. 1/3
B. 1/11
C. 8/15
D. 2/7
E. 4/9
[Reveal] Spoiler: OA

Kudos [?]: 98 [0], given: 37

Manager
Manager
User avatar
Joined: 29 Jun 2011
Posts: 73

Kudos [?]: 16 [0], given: 47

Re: M is the length of the sequence of digits that are duplicated in an in [#permalink]

Show Tags

New post 06 Jul 2011, 14:11
non terminating decimals are produced in cases of division by prime numbers except by 2 and 5.

options a and c are effectively the same because they have the same nonterminating prime in their denominator ie 3. 15 = 5*3 and 5 is terminating. so both would yeild the same M. therefore, none of them is the correct option.
now 4/9 gives M=1 which incidentally is also M for option a ie 1/3. so option e is out.
now 1/11 gives M = 2 whereas 2/7 gives M=6 which is the biggest. 2/7=0.285714
ans d
_________________

It matters not how strait the gate,
How charged with punishments the scroll,
I am the master of my fate :
I am the captain of my soul.
~ William Ernest Henley

Kudos [?]: 16 [0], given: 47

Re: M is the length of the sequence of digits that are duplicated in an in   [#permalink] 06 Jul 2011, 14:11
Display posts from previous: Sort by

M is the length of the sequence of digits that are duplicated in an in

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.