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 →

integers

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Legendary Member
Posts: 2467
Joined: Thu Aug 28, 2008 6:14 pmFollowed by: 11 members
Thanked: 331 times

by cramya » Sat Feb 14, 2009 1:04 pm
I would go with B

Question : Is 3 (a+b) - c divisible by 3

3(a+b) is always divisible by 3 so the real question is Is c divisible by 3. If it is then the expression 3(a+b) -c is divisible by 3

Stmt I

a+b divisible by 3

No idea about c therefore the expression 3 (a+b) - c may or may not be divisible by 3

INSUFF

Stm II
c is divisible by 3
Exactly what we need

SUFF
Last edited by cramya on Sat Feb 14, 2009 1:10 pm, edited 1 time in total.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 226
Joined: Tue Jan 13, 2009 1:27 pmFollowed by: 1 member
Thanked: 23 times

Re: integers

by awesomeusername » Sat Feb 14, 2009 1:07 pm
naaga wrote:If a, b, and c are integers, is the number 3(a+b)-c divisible by 3?
(1) a + b is divisible by 3.
(2) c is divisible by 3.


folks exp plz....
I would say B.

(1) If a+b is divisible by 3, (say a+b = 3) and c=1, then 3(3) -1 = 8, which is not divisible by 3.

(2) If c is divisible by 3, then we have a multiple of 3 - 3, which is still a multiple of 3. For instance, 3(5) - 3 = 3(5-1) = 12.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1