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 →

Does xy=x^2

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 73
Joined: Fri Feb 01, 2008 1:28 amFollowed by: 1 member
Location: India
Thanked: 1 times
by sandeep_chhabra » Thu May 15, 2008 9:52 am
Does xy=x^2 ??


1) xy=y^2
2) x^2 = y^2

shouldnt A be the answer. xy=y^2 is possible only when x=y and if x=y then xy=x^2.

am i missing something?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Legendary Member
Posts: 631
Joined: Mon Feb 18, 2008 11:57 pmFollowed by: 3 members
Thanked: 29 times

by netigen » Thu May 15, 2008 12:03 pm
I think the Q should be is X=Y? Are you sure you got the Q correct.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 73
Joined: Fri Feb 01, 2008 1:28 amFollowed by: 1 member
Location: India
Thanked: 1 times

by sandeep_chhabra » Thu May 15, 2008 8:42 pm
Yep the question is accurate ...
Attachments
Quantitative3_Q30.JPG
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 423
Joined: Thu Dec 27, 2007 1:29 amFollowed by: 2 members
Location: Hyderabad, India
Thanked: 36 times
GMAT Score:770

Re: Does xy=x^2

by simplyjat » Thu May 15, 2008 9:56 pm
sandeep_chhabra wrote:Does xy=x^2 ??


1) xy=y^2
2) x^2 = y^2

shouldnt A be the answer. xy=y^2 is possible only when x=y and if x=y then xy=x^2.

am i missing something?
xy = y^2 is also possible when y = 0 and x can take any value...
simplyjat
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 631
Joined: Mon Feb 18, 2008 11:57 pmFollowed by: 3 members
Thanked: 29 times

by netigen » Thu May 15, 2008 10:00 pm
The questions is asking is xy=x^2

or x^2-xy =0

which means either x=0 or x=y?

from (a)
xy=y^2
xy-y^2=0

so y=0 or x=y Insufficient

from (b)
x^2=y^2

so + or -(x)=+or - (y) Insufficient

both (a) and (b) are together sufficient to answer the question because only when x=y the two equations will be true
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 73
Joined: Fri Feb 01, 2008 1:28 amFollowed by: 1 member
Location: India
Thanked: 1 times

by sandeep_chhabra » Thu May 15, 2008 10:00 pm
Right... :)
thanks
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1