Rephrase it
Is a^2 - b^2 > 0
or (a+b)(a-b) > 0
1. a+b < 0, insufficient, since we need to know if a - b > 0
2. a < 0, insufficient.
Both insufficient, since we can't say b < 0. However, if (1) would have been b < a, the answer wud be C.
BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course
Redeem
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
Absolute Value
Source: Beat The GMAT — Data Sufficiency |
Great and easy approach palvarez !!palvarez wrote:Rephrase it
Is a^2 - b^2 > 0
or (a+b)(a-b) > 0
1. a+b < 0, insufficient, since we need to know if a - b > 0
2. a < 0, insufficient.
Both insufficient, since we can't say b < 0. However, if (1) would have been b < a, the answer wud be C.
Thanks
Abdulla
hi abdulla.. u post the OA as A and say palvarez is right.. with his ans as C?
what is the OA?
rephrase: |a|-|b| <0
a.) b < -a --- insuff
b.) a<0 -infus
only value possible for a = -ve
..by substituting.. ans should be E and not C
what is the OA?
rephrase: |a|-|b| <0
a.) b < -a --- insuff
b.) a<0 -infus
only value possible for a = -ve
..by substituting.. ans should be E and not C
You should take a break buddybrick2009 wrote:hi abdulla.. u post the OA as A and say palvarez is right.. with his ans as C?
what is the OA?
rephrase: |a|-|b| <0
a.) b < -a --- insuff
b.) a<0 -infus
only value possible for a = -ve
..by substituting.. ans should be E and not C
Check my answer again ... and read the last sentence in palvarez's post again...Both insufficient, since we can't say b < 0. However, if (1) would have been b < a, the answer wud be C.
Abdulla
