yezz wrote:

study wrote:

Is x > y ?

(1) x2 > y2

(2) 3 x – 7 > – 3

from 1

x^2>y^2 , y can be a fraction > x that is a fraction too....insuff

from 2

3x>4

x>4/3.....insuff

from both

as long as x is not a fraction or -ve then suff

C

x>y?

1)(x^2 - y^2) >0 => when x and y have differnt signs then inequality changes ,INSUFFI

2) x>4/3 does not help

Combine both :

since from 2 we know x>0 ,i.e,x>4/3 , x >y from 1)

being fraction or not does not matter since 1) has 21 possibilities y >0 or y<0 but whatever may be the case y<x .

IMO C

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cheers

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