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sirisha.g
- Senior | Next Rank: 100 Posts
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- GMAT Score:690
this one is from veritas practice test.
is x^2+y^2>100?
1)2xy<100
2)(x+y)^2> 200
[spoiler]i feel the answer should be B because (x+y)^2 will be grater than 200 only for values from 15 onwards i.e 15^2, 16^2..
if we consider 15 then x, y=10,5 or5,10 or 3, 12 so on.. so for any value the x and y we will get a yes.. so statement 2 is sufficient.
the OA is C. [/spoiler]
is x^2+y^2>100?
1)2xy<100
2)(x+y)^2> 200
[spoiler]i feel the answer should be B because (x+y)^2 will be grater than 200 only for values from 15 onwards i.e 15^2, 16^2..
if we consider 15 then x, y=10,5 or5,10 or 3, 12 so on.. so for any value the x and y we will get a yes.. so statement 2 is sufficient.
the OA is C. [/spoiler]
Last edited by sirisha.g on Sat Aug 28, 2010 6:01 am, edited 1 time in total.
