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Source: — Data Sufficiency |
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by shovan85 » Sun Oct 03, 2010 12:18 pm
From 1: m>l we cannot say anything about r. So NS.

From 2: l-m>r so the difference between the two integers is greater than r. But this does not necessarily satisfy whether r > 0.
Say l=4,m=1 and r=2: here l-m=3>r but r is still greater than m
Similarly say l=5,m=3 and r=1: here l-m=2>r and m is greater than r. So Not Suff.

Combining both you can definitely say l-m is negative as m>l. If a negative integer is greater than r that means r is more negative.
We know l and m both are positive. So sufficient.

IMO C
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