gmat800live wrote:
Apologies for the weird question. I searched and saw other threads, but didn't see any response from experts etc.
Does the GMAT consider 0 to be a perfect square, cube etc? - Mainly concerned in case a DS question states "x is a perfect square" - Then I need to know if 0 can be considered or not.
Moreover, would -27 be a perfect cube? - And more generally, for "perfect cubes", can I consider negative numbers since sign is kept?
Thank you so much.
1)
Zero is both a perfect square and a perfect cube.2) -27 can be written as \((-1)*27=(-1)^3*3^3\); so cube root of -27=(-1)*3=-3. Hence , negative numbers could be perfect cubes.
Hope it helps.
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Regards,
PKN
Rise above the storm, you will find the sunshine
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