BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
Live EA class + 6 months of EA OnDemand
  • Expert-led weekly online sessions
  • EA Masterclass access between classes
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

130-point score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

A problem

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Junior | Next Rank: 30 Posts
Posts: 14
Joined: Mon Sep 22, 2008 10:23 pm
by SpeCTRuM » Tue Sep 23, 2008 11:35 am
Hello,

I could not understand the below question;


Image


The correct answer is A but i just can not understand why.

If the first "is" were "if", i should understand. Because then, if x <> 0, y had to be 0 to show that the first proposition is true. But i just confused because of the first sentence.
Is xy + z, is |x-y| >0?
Could anyone explain the sentence and the solution?

Thanks...
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
Legendary Member
Posts: 891
Joined: Sat Aug 16, 2008 4:21 amFollowed by: 1 member
Thanked: 27 times
GMAT Score:660(

by 4meonly » Tue Sep 23, 2008 11:42 am
I think question should be
If xy + z = z, is |x-y| >0?
Reprasing the question we should answer x is not equeal to y? (from |x-y| >0?)
From If xy + z = z we conclude that xy=0
so we can have
x=0, y=0
x=0, y -any number
x-any number, y=0

(1)
x is not equal to zero, so y=0
so, difference between x and y is not equal to zero, |x-y| >0
SUFF

(2)
y=0
two options
x=0, y=0. |x-y| = 0
x-any number, y=0. |x-y| >0
INSUFF

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