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 →

Operations / Exponents

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Newbie | Next Rank: 10 Posts
Posts: 3
Joined: Fri Jul 04, 2008 3:53 am
Location: Frankfurt, Germany
by Nena1982 » Sat Jul 19, 2008 7:02 am
Hi guys,

I just took the GMAT Preptest and got this question that I can't figure out at all:

If operation o is defined for all positive integers x and w by x o w = 2^x / 2^w, then (3 o 1) o 3 =

2
4
8
16
32

The correct answer is 2 (for "+" I guess). I'm not sure though why 32 (for "-") is not right...

I'm sure you guys are smarter than I... ;)

Truly appreciate your help!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
Legendary Member
Posts: 661
Joined: Tue Jul 08, 2008 12:58 pm
Location: France
Thanked: 48 times

by pepeprepa » Sat Jul 19, 2008 7:40 am
Perhaps you read the equation in the wrong way, that's what I did.
The equation is just: x o w = 2^x / 2^w
It may be ok now:

3o1=(2^3)/2=4
(3o1)o3=4o3=(2^4)/(2^3)=2
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Newbie | Next Rank: 10 Posts
Posts: 3
Joined: Fri Jul 04, 2008 3:53 am
Location: Frankfurt, Germany

by Nena1982 » Sat Jul 19, 2008 7:51 am
Well, that makes sense... :oops: LOL

Thanks a lot!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1