Roots

This topic has expert replies
Source: — Data Sufficiency |

Master | Next Rank: 500 Posts
Posts: 166
Joined: Sat Apr 18, 2009 10:41 pm
Thanked: 9 times
GMAT Score:770

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.