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.
Absolute Value
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Abdulla
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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
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brick2009
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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
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Abdulla
- Master | Next Rank: 500 Posts
- Posts: 328
- Joined: Thu Aug 07, 2008 5:25 pm
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- Thanked: 4 times
- GMAT Score:550
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
