• Board contributors include instructors with "800" GMAT scores.
  • 95% of posts have replies within 24 hours.
  • Join for discounts with 800score, VeritasPrep and ManhattanGMAT


FAQ  - Register  - Search - Login 

All times are UTC - 7 hours




Post new topic Reply to topic  [ 27 posts ]  Go to page Previous  1, 2, 3
Author Message
 Post subject: Re: GMAT Number Theory
PostPosted: Wed Apr 10, 2013 2:20 am 
Offline
User avatar

Joined: Fri Apr 09, 2010 2:11 pm
Posts: 457
fedana wrote:
On the GMAT, would the number 7 be considered a multiple of the number 3.5?
No, divisors and multiples refer to integers only. So the phrase "n is a multiple of m/2" implies that m/2 is an integer.


Top
 Profile  
 
 Post subject: Re: GMAT Number Theory
PostPosted: Wed May 22, 2013 8:29 am 
Offline
User avatar

Joined: Tue Apr 13, 2010 8:48 am
Posts: 481
Wrong answer, suppose n = 6, a = 1, m = 9.


Top
 Profile  
 
 Post subject: Re: GMAT Number Theory
PostPosted: Wed May 22, 2013 8:55 am 
Offline
User avatar

Joined: Fri Apr 09, 2010 2:11 pm
Posts: 457
questioner wrote:
Wrong answer, suppose n = 6, a = 1, m = 9.
The values do not fit in any statement.


Top
 Profile  
 
 Post subject: Re: GMAT Number Theory
PostPosted: Wed May 22, 2013 9:10 am 
Offline
User avatar

Joined: Tue Apr 13, 2010 8:48 am
Posts: 481
n = 2m × k (given) , if k = 1 and m = 2, then n = 4. m is NOT divisible by m. So, it is not sufficient as well.


Top
 Profile  
 
 Post subject: Re: GMAT Number Theory
PostPosted: Wed May 22, 2013 9:28 am 
Offline
User avatar

Joined: Fri Apr 09, 2010 2:11 pm
Posts: 457
questioner wrote:
n = 2m × k (given) , if k = 1 and m = 2, then n = 4.
Based on statement (2) that is correct.

Quote:
m is NOT divisible by m. So, it is not sufficient as well.
It's not clear what you meant, but what the question asks us is:
Quote:
… is n²ª a multiple of mª?
The proposed values make it "… is 4²ª a multiple of 2ª?"

And 4²ª is indeed a multiple of 2ª, so the proposed values do not prove statement (2) to be insufficient.


Top
 Profile  
 
 Post subject: Re: GMAT Number Theory
PostPosted: Thu Aug 15, 2013 1:31 pm 
Offline
User avatar

Joined: Tue Apr 13, 2010 8:48 am
Posts: 481
I think statement 2 is insufficient as well: if 2m is divisor of n then let's say that m = n = 3 --> 6/3 = 2 let's say, in addition, that a = 1 then 3 is not divisor of 9 (3²).


Top
 Profile  
 
 Post subject: Re: GMAT Number Theory
PostPosted: Thu Aug 15, 2013 1:34 pm 
Offline
User avatar

Joined: Fri Apr 09, 2010 2:11 pm
Posts: 457
questioner wrote:
I think statement 2 is insufficient as well: if 2m is divisor of n then let's say that m = n = 3 --> 6/3 = 2 …
Statement (2) tells us that n is a multiple 2m. In other words n is divisible by 2m.
If m = n = 3, then n = 3 is NOT divisible by 2m = 6.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 27 posts ]  Go to page Previous  1, 2, 3

All times are UTC - 7 hours


Who is online

Users browsing this forum: No registered users and 0 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Template made by DEVPPL -
phpBB SEO
 
GMAT(TM) and GMAT CAT (TM) are registered trademarks of the Graduate Management Admission Council(TM). The Graduate Management Admission Council(TM) does not endorse, nor is affiliated in any way with the owner or any content of this site.