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Source: — Data Sufficiency |
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by raghavsarathy » Sat Jul 25, 2009 5:18 pm
IMO - E

The statements are individually not sufficient.

Even if we take the statements together , we will not be able to determine. I solved by taking a few numbers.

Case 1 : x= 2 , z=8 . Statements 1 and 2 are satisfied.
But sqrt(z)= 2(sqrt 2) is not an integer

Case 2: x= 4, z=64 Statements 1 and 2 are satisfied.
And sqrt(z) = 8 an integer.

Hence both statements are not sufficient.
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