Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 563 reviewsTarget Test Prep

mgmat a

Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Legendary Member
Posts: 789
Joined: Sun May 06, 2007 1:25 amFollowed by: 6 members
Location: Southern California, USA
Thanked: 15 times
by resilient » Sun Jun 08, 2008 7:55 pm
If a and b are the digits of the two-digit number X, what is the remainder when X is divided by 9?

(1) a + b = 11

(2) X + 7 is divisible by 9


IN statement two,Cant x be 02 (two digit integer) + 7, which is divisible by 9?

for this reason, I disregarded the statement


qa is d
Appetite for 700 and I scraped my plate!
Top
Join the discussion
Source: — Data Sufficiency |
Newbie | Next Rank: 10 Posts
Posts: 5
Joined: Thu Jun 05, 2008 11:25 am

by meet.anup » Sun Jun 08, 2008 11:20 pm
Use divisibility test for 9: sum of the digits should be divisible by 9
Thus, if a+b = 11 this is not divisible by 9 and would give the remainder as 2.

Similarly, if X+7 is divisible by 9 then X is obviously not divisible by nine.
As 7 is needed to be added to X to make it divisible by 9, thus the remainder would be 2 (same as in 1).
e.g: 2+7/9 so 2/9 remainder is 2
11+7/9 is integer so 11/9 gives remainder 2 and so on..
Top
Join the discussion
Legendary Member
Posts: 789
Joined: Sun May 06, 2007 1:25 amFollowed by: 6 members
Location: Southern California, USA
Thanked: 15 times

yes

by resilient » Mon Jun 09, 2008 9:09 am
yes my question is not the actual answer or the approach. My specific question is cant x be 02. If so, statement two is insuffucient.
Appetite for 700 and I scraped my plate!
Top
Join the discussion

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 2623
Joined: Mon Jun 02, 2008 3:17 amFollowed by: 355 members
Location: Montreal
Thanked: 1090 times
GMAT Score:780

Re: yes

by Ian Stewart » Mon Jun 09, 2008 10:19 am
resilient wrote:yes my question is not the actual answer or the approach. My specific question is cant x be 02. If so, statement two is insuffucient.
x cannot be '02', because '02' is not a two-digit number. It is the one-digit number 2. Still, even if x is equal to 2, the remainder when you divide 2 by 9 is indeed equal to 2, just as for any other example of x you might choose when considering Statement 2. So even if you allow x to be equal to 2, Statement 2) is still sufficient.
Top
Join the discussion
Junior | Next Rank: 30 Posts
Posts: 15
Joined: Wed Dec 26, 2007 3:46 pm

by andy9923 » Mon Jul 28, 2008 5:00 am
i have a problem with the answer choice D.

Can't X be negative? If X=-16, then X+7=-9, which i believe is divisible by 9.

A negative two-digit number is still a two-digit number right?

I posted this on MGMAT forum earlier but haven't gotten a response yet.

thanks a bunch
Top
Join the discussion