BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

Manhattan GMAT Number Properties Question

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Newbie | Next Rank: 10 Posts
Posts: 6
Joined: Fri Jan 08, 2010 12:45 pm
Thanked: 1 times
by BSDesis » Fri Jan 08, 2010 12:55 pm
Greetings all. I'm beginning my studies for the GMAT, and am working through the Manhattan GMAT study guides.

One of the problem sets has a question that reads:

If 6 is not a factor of d, is 12d divisible by 6?

a) Yes
b) No
c) Cannot Be Determined

Manhattan records the answer as Yes, but I do not see why it is not CBD.
My reasoning: though 12 is divisible by 6, the problem does not state d to be an integer. Is there a term of art that I am missing that would imply this scenario?

Thanks.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Quantitative Reasoning |
GMAT Instructor
Posts: 1578
Joined: Thu May 28, 2009 8:02 amFollowed by: 34 members
Thanked: 128 times
GMAT Score:760

by Osirus@VeritasPrep » Fri Jan 08, 2010 12:57 pm
Which chapter is that?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Newbie | Next Rank: 10 Posts
Posts: 6
Joined: Fri Jan 08, 2010 12:45 pm
Thanked: 1 times

by BSDesis » Fri Jan 08, 2010 12:58 pm
osirus0830 wrote:Which chapter is that?
1
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
GMAT Instructor
Posts: 1578
Joined: Thu May 28, 2009 8:02 amFollowed by: 34 members
Thanked: 128 times
GMAT Score:760

by Osirus@VeritasPrep » Fri Jan 08, 2010 1:01 pm
For problems #1-11, use one or more prime boxes, if appropriate, to answer each question. YES, NO, or CANNOT BE DETERMINED. If your answer is CANNOT BE DETERMINED, use two numerical examples to show how the problem could go either way. All variables in problems #1 through #11 are assumed to be INTEGERS unless otherwise indicated.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 177
Joined: Thu Aug 14, 2008 11:59 am
Thanked: 25 times

by mp2437 » Wed Jan 13, 2010 9:28 am
Since 12 is divisible by 6, it follows that 12d can be divisible by 6 for any number d.

Try plugging in values if you are still stuck. i.e - d = 7. 12*7 / 6 = 2 * 7 = 14.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 30
Joined: Wed Jan 13, 2010 7:20 amFollowed by: 1 member
Thanked: 1 times

by Yes.WeCan » Wed Jan 13, 2010 1:19 pm
Like the OP posted.

Nowhere it says that d has to be an integer.

If d =1.1 12d = 13.2, cannot be divided by 6.

IF d = integer, then YES
IF d= not defined, then CBD
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1