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 →

Grockit- PS-must be true

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Community Manager
Posts: 1048
Joined: Mon Aug 17, 2009 3:26 amFollowed by: 27 members
Location: India
Thanked: 51 times
GMAT Score:670
by arora007 » Mon Dec 13, 2010 6:45 am
If a and b are different positive integers and a + b = a(a + b), then which of the following must be true?


I. a = 1

II. b = 1

III. a < b

A) I only
B) II only
C) III only
D) I and II
E) I and III

I liked this one, If u dont rush you will get it right
https://www.skiponemeal.org/
https://twitter.com/skiponemeal
Few things are impossible to diligence & skill.Great works are performed not by strength,but by perseverance

pm me if you find junk/spam/abusive language, Lets keep our community clean!!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
Legendary Member
Posts: 537
Joined: Fri Jan 22, 2010 10:06 pmFollowed by: 1 member
Thanked: 14 times

by frank1 » Mon Dec 13, 2010 7:58 am
I think it should be E
GMAT score is equally counted as your GPA and 78 clicks can change you life.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 181
Joined: Sat Oct 16, 2010 1:57 pm
Thanked: 4 times

by N:Dure » Mon Dec 13, 2010 8:22 am
E

If a= 1 and b then has to be different so = 2 a+b = 3 = a(a+b) = 3

if b=1 and a=2 a+b=3 a(a+b)= 6

Then a =1 works and b has to be different so it must be bigger ie. a<b
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 265
Joined: Mon Dec 28, 2009 9:45 pmFollowed by: 2 members
Thanked: 26 times
GMAT Score:760

by mj78ind » Mon Dec 13, 2010 9:34 am
arora007 wrote:If a and b are different positive integers and a + b = a(a + b), then which of the following must be true?


I. a = 1

II. b = 1

III. a < b

A) I only
B) II only
C) III only
D) I and II
E) I and III

I liked this one, If u dont rush you will get it right
Ok am a bit rusty :)

(a+b) = a((a+b)

=> (a-1)(a+b)=0

This is only possible if a= 1. Now a and b are different if a= 1, then b has to be greater than 1 since both are different positive integers. Hence E
Call me 1 - (412) 897 6727 (US) or leave a msg on BTG for GMAT advise / questions.
If you like the solution, check out my debrief at and leave a comment:
https://www.beatthegmat.com/760-done-dea ... 66740.html
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Community Manager
Posts: 1048
Joined: Mon Aug 17, 2009 3:26 amFollowed by: 27 members
Location: India
Thanked: 51 times
GMAT Score:670

by arora007 » Mon Dec 13, 2010 10:00 pm
yeah..its E... hope nobody chose A like I did when I had about 30 seconds for the problem!
https://www.skiponemeal.org/
https://twitter.com/skiponemeal
Few things are impossible to diligence & skill.Great works are performed not by strength,but by perseverance

pm me if you find junk/spam/abusive language, Lets keep our community clean!!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1