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Source: — Data Sufficiency |
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by mental » Thu Jan 08, 2009 1:59 am
st1: xy>0
Let x=-1, y=-2, so xy=2
x/y = -1/-2=1/2
is xy>x/y: YES

Let x=-1, y=-1/2, so xy=(-1)*(-1/2)=1/2
x/y = (-1)/(-1/2) = 2
is xy>x/y: NO

St1 is INSUFF

st2: y<0
INSUFF, no info on x
or we can still use the values in st1

combined: Still INSUFF, use the values we had taken for st1

E
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by aj5105 » Sat Jan 10, 2009 7:41 am
yup E.
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by Bidisha800 » Sat Jan 10, 2009 3:08 pm
another (E)
Drill baby drill !

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