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what's the easiest way to solve this ?

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Source: — Data Sufficiency |
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by ontopofit » Mon Feb 02, 2009 6:34 am
1) /x > y ;this tells the answer if x was a +ve integer.but it can be a fration. insuff
2) x^3 > y ; x > y for a fraction but not for an integer; insuff

combining we get that x>y whether a fration or an integer.

ans C
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by naaga » Mon Feb 02, 2009 9:39 am
Mr ontopofit, can you plz give the clear description , I didnt get the logic behind it , in stmnt I is it 1/x or sqrt x, i think the answer would be D if it is sqrt x
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Poon Poon

by nattatob » Mon Feb 02, 2009 12:02 pm

IMO A

Maybe you have to replace X and Y with negative number and fragtion :

1) means X greather than Y^2 right ?
- it means X must be positive number
if X=5 then Y=2 === Correct
X=5 then Y=-2 === also correct

So sufficient

2) means X^3 greather than Y right ?
if X=-2 then Y=-9 === Correct
if X=2 then Y=7 === not correct
so insufficient
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