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GMATJeff
- Newbie | Next Rank: 10 Posts
- Posts: 8
- Joined: Thu Sep 18, 2008 11:18 pm
- Location: California
Here is the question:
Is "n" an integer?
(1) n^2 is an Integer.
(2) The square root of n is an integer
The answer is "B" and I understand that (2) is sufficient, but I do not understand why (1) is not also sufficient. If n^2 is an integer, doesn't "n" have to be an integer? I can't think of any non-integers that would satisfy this.
Any explanations would be greatly appreciated!
Is "n" an integer?
(1) n^2 is an Integer.
(2) The square root of n is an integer
The answer is "B" and I understand that (2) is sufficient, but I do not understand why (1) is not also sufficient. If n^2 is an integer, doesn't "n" have to be an integer? I can't think of any non-integers that would satisfy this.
Any explanations would be greatly appreciated!
