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 →

Gmat prep - remainder

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
User avatar
Legendary Member
Posts: 682
Joined: Fri Jan 16, 2009 2:40 amFollowed by: 1 member
Thanked: 32 times

Re: Gmat prep - remainder

by Vemuri » Tue May 05, 2009 7:48 pm
IMO B

Stmt1: 21x+r=n. The reminder is odd. That means the reminder can be 1,3 & 5. This info is not sufficient.

Stmt2: 28x+r=n. The reminder is 3. If n=59, then the reminder is 3 when divided by 28 & 7. The same is the case with all multiples of 28. This statement is sufficient.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 229
Joined: Tue Jan 13, 2009 6:56 am
Thanked: 8 times
GMAT Score:700

by Uri » Wed May 06, 2009 12:45 pm
IMO (B)

observe that both 21 and 28 are multiples of 7. thus whatever is the reminder after division by 21 or 28, will also lead to the reminder after division by 7. if the reminder is less than 7 after division by 21 or 28, then this will also be the reminder after division by 7 if reminder is greater than 7 after division by 21 or 28, then the reminder after division by 7 will equal the reminder after the following calculation:
(reminder after division by 21 or 28)/7
eg. 38/21 gives the reminder 17. so 38 when divided by 7 will give reminder= reminder when 17 is divided by 7
=3

(1) is not sufficient. r can be 1,3 or 5.
(2) ensures that the reminder is 3. hence sufficient.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 179
Joined: Mon Dec 29, 2008 4:41 am
Thanked: 2 times

by abhinav85 » Wed May 06, 2009 1:56 pm
I can't see ques which are given in this format .docx???

what is that?
and how to open these kind of files????
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 1578
Joined: Sun Dec 28, 2008 1:49 amFollowed by: 9 members
Thanked: 82 times
GMAT Score:720

by maihuna » Sat May 09, 2009 1:45 am
Stmt 1 : n = 21k + r
where r could be: 1 3 5 7 9 11 13 15 17 19
remainder with 7: 1 3 5 0 2 4 6 1 3 5

So remainder could be : 0 1 2 3 4 5 and so not sufficient

Stmt 2: n = 28k + 3 so remainder with 3 will be 3 sufficient
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1