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 →

took a little too long to solve this !!

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Legendary Member
Posts: 574
Joined: Sun Jun 01, 2008 8:48 am
Location: Bangalore
Thanked: 28 times
by vishubn » Tue Nov 11, 2008 8:17 pm
18. If x and y are nonzero integers, is(x/y) an integer?
(1) x is the product of 2 and some other integer.
(2) There is only one pair of positive integers whose product equals y.

I am little curious ! to know the approach :)

OA E
KILL !! DIE !! or BEAT my FEAR !!! de@D END!!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Legendary Member
Posts: 2467
Joined: Thu Aug 28, 2008 6:14 pmFollowed by: 11 members
Thanked: 331 times

by cramya » Tue Nov 11, 2008 8:22 pm
Vishu,

Stmt I)

tell us x is even No info about y INSUFF

Stmt II

tells us y is prime No info about x INSUFF

Taking 2 together still INSUFF

X/Y IS AN INTEGER IF PRIME y=2(still dont know if y is in fact 2 could be any other primes wiht may/may not be cases)

We can stop rught here and mark E)

Eg: 2*4 = 8 / 3 not an integer
2*6 / 3 = integer

INSUFF


Hope I have not missed something here!

E)
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 2134
Joined: Mon Oct 20, 2008 11:26 pmFollowed by: 25 members
Thanked: 237 times
GMAT Score:730

Re: took a little too long to solve this !!

by logitech » Tue Nov 11, 2008 8:29 pm
vishubn wrote:18. If x and y are nonzero integers, is(x/y) an integer?
(1) x is the product of 2 and some other integer.
(2) There is only one pair of positive integers whose product equals y.

I am little curious ! to know the approach :)

OA E
Are you only a little bit curious ? Then I should only tell a little bit of my approach

1 and 2 both gives us separate info about X and Y so it is either C or E

1) X = 2K , where K is some other integer. So X is not equal to 4 :)
2) y = Prime ^ 2

1+2) it is not 4/4 - which was close ;-)

but it is 2X/Prime Prime = ? It can or not be an integer, Hence E

X=49
Y=49
SUF

X=3
Y=25
NOPE

TATAM!!
LGTCH
---------------------
"DON'T LET ANYONE STEAL YOUR DREAM!"
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 2467
Joined: Thu Aug 28, 2008 6:14 pmFollowed by: 11 members
Thanked: 331 times

by cramya » Tue Nov 11, 2008 8:56 pm
2) y = Prime ^ 2

I am not so sure on the y=prime^2 part

1 pair of positive integers in the sense (1,2) or (2,1) ; (1,3) or (3,1)

Regards,
Cramya
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 574
Joined: Sun Jun 01, 2008 8:48 am
Location: Bangalore
Thanked: 28 times

by vishubn » Tue Nov 11, 2008 9:25 pm
yaaa ! was concerned ! that i took around 3 mins ! looked eassy when solving but realized the time !!

Thanks u guys

Vishu

ps. i know the well know quote in the forum about the 2:00 and 2:30 mins
KILL !! DIE !! or BEAT my FEAR !!! de@D END!!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 2134
Joined: Mon Oct 20, 2008 11:26 pmFollowed by: 25 members
Thanked: 237 times
GMAT Score:730

by logitech » Tue Nov 11, 2008 9:26 pm
cramya wrote:
2) y = Prime ^ 2

I am not so sure on the y=prime^2 part

1 pair of positive integers in the sense (1,2) or (2,1) ; (1,3) or (3,1)

Regards,
Cramya
You are right cramya. I think the wording cannot be translated into what I came up with.

How about y=prime ? ( Nx1)
LGTCH
---------------------
"DON'T LET ANYONE STEAL YOUR DREAM!"
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 2467
Joined: Thu Aug 28, 2008 6:14 pmFollowed by: 11 members
Thanked: 331 times

by cramya » Tue Nov 11, 2008 9:37 pm
You are right cramya. I think the wording cannot be translated into what I came up with.

How about y=prime ? ( Nx1)

Yep that works!
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

by Stuart@KaplanGMAT » Wed Nov 12, 2008 1:24 am
Just a quick note:

"There is only one pair of positive integers whose product equals y."

Y could be prime, but y could also equal 1, since only one pair of positive integers (1*1) equals 1.

Without the word "distinct" in the statement, we can't assume that the integers must be different.

(E) is, of course, still 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
User avatar
Legendary Member
Posts: 2134
Joined: Mon Oct 20, 2008 11:26 pmFollowed by: 25 members
Thanked: 237 times
GMAT Score:730

by logitech » Wed Nov 12, 2008 1:33 am
Thanks Stuart.
LGTCH
---------------------
"DON'T LET ANYONE STEAL YOUR DREAM!"
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 2467
Joined: Thu Aug 28, 2008 6:14 pmFollowed by: 11 members
Thanked: 331 times

by cramya » Wed Nov 12, 2008 5:25 am
Thanks Stuart!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1