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 →

Coordinate geometry

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Legendary Member
Posts: 727
Joined: Sun Jun 08, 2008 9:32 pmFollowed by: 1 member
Thanked: 8 times
by umaa » Tue Jul 21, 2009 6:54 pm
In the xy-plane, point P has coordinates (m; n) and point Q
has coordinates (n;m). What is the distance between
P and Q?
(1) m - n = 2 � n = 2
(2) m + n = 5

I don't have the original answer for this. IMO A.

Let me know your answers and explanations.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Legendary Member
Posts: 752
Joined: Sun May 17, 2009 11:04 pm
Location: Tokyo
Thanked: 81 times
GMAT Score:680

by tohellandback » Tue Jul 21, 2009 7:01 pm
IMO A

distance is sqrt((m-n)^2+(n-m)^2)

1) sufficient to find m-n and n-m
2) Not SUFF
The powers of two are bloody impolite!!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 527
Joined: Thu May 01, 2008 12:06 am
Thanked: 7 times

Re: Coordinate geometry

by real2008 » Wed Jul 22, 2009 12:54 am
umaa wrote:In the xy-plane, point P has coordinates (m; n) and point Q
has coordinates (n;m). What is the distance between
P and Q?
(1) m - n = 2 � n = 2
(2) m + n = 5

I don't have the original answer for this. IMO A.

Let me know your answers and explanations.
i think answer should be A; here the information that n= 2 is not needed even.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1