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 →

DS need answer and explanations please

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Senior | Next Rank: 100 Posts
Posts: 93
Joined: Thu Apr 10, 2008 1:42 pm
Location: Chicago
Thanked: 20 times

Re: DS need answer and explanations please

by Musiq » Fri Apr 18, 2008 8:08 am
Hi Sharbel,

Q: Is tenths digit of n >7 ?

{An answer of Always YES or ALWAYS NO leads to Sufficiency. An answer of sometimes Yes and sometimes No leads to Insufficiency}

Its given data that n has to be a number between 3 and 4

Statement 2 looks easier.....go right to Statement 2:

n + 0.28 > 4
Thus, n > 4 - 0.28
Or , n > 3.68 .......( but at the same time its also less than 4, given info)

If n= 3.69, the tengths digit = 6 .......(Is tenths digit of n >7 ? ---NO)
If n = 3.81, the tenths digit = 8........(Is tenths digit of n >7 ? ---YES)
Sometimes Yes and Sometimes NO = Insufficient.

Eliminate B and D

Statement 1:

n has to be 3. 5 or greater, since rounding it off leads to 4

Again we can have myriads of tenths digit values , so Insufficiency

Even if you combine the statements, we havent resolved the possiblity of the tenths digit of n being either larger than 7 or lesser than 7.

Therefore, my answer is E.
For love, not money.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 17
Joined: Sat Mar 08, 2008 5:51 am
Location: Saudi Arabia

by Sharbel » Fri Apr 18, 2008 10:08 am
Thank you for the reply

My answer was also E, but unfortunately the practice test from Mc graw Hill says it is B "statemenet 2 alone is sufficient". i did not understand the reasoning behind it

what do you think ????
Sharbel Nasr
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
GMAT Instructor
Posts: 3225
Joined: Tue Jan 08, 2008 2:40 pmFollowed by: 614 members
Location: Toronto
Thanked: 1710 times
GMAT Score:800

Re: DS need answer and explanations please

by Stuart@KaplanGMAT » Fri Apr 18, 2008 12:07 pm
Musiq wrote:Hi Sharbel,

Q: Is tenths digit of n >7 ?

{An answer of Always YES or ALWAYS NO leads to Sufficiency. An answer of sometimes Yes and sometimes No leads to Insufficiency}

Its given data that n has to be a number between 3 and 4

Statement 2 looks easier.....go right to Statement 2:

n + 0.28 > 4
Thus, n > 4 - 0.28
Or , n > 3.68 .......( but at the same time its also less than 4, given info)
Calculation police!

n > 4 - 0.28
n > 3.72

However, the answer remains the same, since the tenths digit could be 7, 8 or 9.

Is 7 > 7? NO
Is 8 > 7? YES

Statement (1) doesn't add anything, so the correct answer should be (e).

Are you sure that the original question didn't ask:

Is the tenths digit of n >= 7?

If that were the question, then (b) would in fact be the correct answer.
Image

Stuart Kovinsky | Kaplan GMAT Faculty | Toronto

Kaplan Exclusive: The Official Test Day Experience | Ready to Take a Free Practice Test? | Kaplan/Beat the GMAT Member Discount
BTG100 for $100 off a full course
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 17
Joined: Sat Mar 08, 2008 5:51 am
Location: Saudi Arabia

Hi Stuart

by Sharbel » Fri Apr 18, 2008 12:38 pm
i double checked the question and it does not mention anything about equality to 7, but the answer says it is B ( 1 is insuffiecient because n could be 3.6 or 3.8 ) ( 2 is sufficient becuase the only way this statment is true is if n>3.72)

now this does not make sense for me, since it can be greater than 3.72, n can simply be 3.73 and the tenths digit is =7 or n could be equal to 3.8 and the tenths digit is 8. So the answer is E

do you think if we found a mistake in the Mcgraw hill book they would refund us the money we paid for it ??? :D :D :D
Sharbel Nasr
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 93
Joined: Thu Apr 10, 2008 1:42 pm
Location: Chicago
Thanked: 20 times

Re: DS need answer and explanations please

by Musiq » Fri Apr 18, 2008 5:01 pm
Stuart Kovinsky wrote:
Musiq wrote:Hi Sharbel,

Q: Is tenths digit of n >7 ?

{An answer of Always YES or ALWAYS NO leads to Sufficiency. An answer of sometimes Yes and sometimes No leads to Insufficiency}

Its given data that n has to be a number between 3 and 4

Statement 2 looks easier.....go right to Statement 2:

n + 0.28 > 4
Thus, n > 4 - 0.28
Or , n > 3.68 .......( but at the same time its also less than 4, given info)
Calculation police!

n > 4 - 0.28
n > 3.72
:oops:

You sir are right.

Au contraire, I am totally wrong.
For love, not money.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 17
Joined: Sat Mar 08, 2008 5:51 am
Location: Saudi Arabia

C'est pas grave mon ami/e

by Sharbel » Fri Apr 18, 2008 11:28 pm
we all make mistakes, its all part of the learning process.

By the way, my test is tomorrow at noon, when is yours ?

Bonne chance et merci beaucoup 8)
Sharbel Nasr
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 93
Joined: Thu Apr 10, 2008 1:42 pm
Location: Chicago
Thanked: 20 times

Re: C'est pas grave mon ami/e

by Musiq » Sat Apr 19, 2008 6:41 am
Sharbel wrote:we all make mistakes, its all part of the learning process.

By the way, my test is tomorrow at noon, when is yours ?

Bonne chance et merci beaucoup 8)
No problem.

Good luck to you too!

I am taking the test sometime in Septemeber. My deadlines are for PhD programs, so I am all good.

Again, good luck on your test....cant wait to hear your success story.
For love, not money.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 17
Joined: Sat Mar 08, 2008 5:51 am
Location: Saudi Arabia

by Sharbel » Sun Apr 20, 2008 7:51 am
Hey there,

i just got back from the test, 640 is the unofficial score. i made a fatal mistake and lost track of the time in the quantitative, i left 4 questions unanswered which shot down my quant score to 57%, but the verbal was good 84%.

I think the final score should be a bit higher, they should add the AWA points and i think it is about 650, enough to get me in the program i want.

Wish you all the best and good luck on your test, let me know when you get your scores.

A bientot
Sharbel Nasr
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1