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 →

GMATPrep PS Question

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 151
Joined: Tue May 13, 2008 7:04 pm
Location: dallas,tx usa
Thanked: 6 times

source

by ektamatta » Sat Jun 07, 2008 9:12 pm
i this something is missing in ur question. can u plz tell me the source u got this question?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 20
Joined: Tue Oct 02, 2007 11:54 am

by debohaldar » Sat Jun 07, 2008 11:58 pm
Yes, the question appeared in one of the GMAT Prep tests.

That's all the statement says and gives 2,4,8,16,32 as the answer choices.
Deb
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 708
Joined: Sun Jun 01, 2008 4:59 amFollowed by: 1 member
Location: USA
Thanked: 13 times

by niraj_a » Sun Jun 08, 2008 2:42 am
wierd...as I would have picked 4 as the answer, and here's why -

a) cancel the 2s in num and denom
b) since x * y = 1, then both have to be 1
c) so x + y becomes 2 which ^ 2 = 4
d) so x - y becomes 0 which ^ 2 = 0

i'm not excellent at math so i'm sure i'm making a mistake somewhere. not to mention that i just woke up.

i'd love to see the real explanation for this one.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY

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

by Ian Stewart » Sun Jun 08, 2008 3:50 am
niraj_a wrote: b) since x * y = 1, then both have to be 1
Ah- they could both be 1, but they don't both need to be 1. They could both be -1, for example, or x could be 1/2 and y could be 2.

I think there's a typo in the original question- someone posted about it elsewhere on this forum. I believe, if I remember correctly, that it's supposed to read:

[2^(x+y)^2]/[2^(x-y)^2]

i.e. those terms with x and y are actually in the exponent. Just glancing at that, the answer should, I think, turn out to be 16 if xy=1.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 20
Joined: Tue Oct 02, 2007 11:54 am

by debohaldar » Sun Jun 08, 2008 9:30 am
Ian's explanation actually makes sense - it's hard to believe though that there's a typo in GMATPrep software.
Deb
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1