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Need expert advice - Is 0 a perfect square on the GMAT?

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Intern
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Joined: 06 Sep 2018
Posts: 36
GMAT 1: 760 Q50 V44
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Need expert advice - Is 0 a perfect square on the GMAT?  [#permalink]

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New post 11 Oct 2018, 13:57
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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.
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Re: Need expert advice - Is 0 a perfect square on the GMAT?  [#permalink]

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New post 13 Oct 2018, 20:52
1
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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Re: Need expert advice - Is 0 a perfect square on the GMAT?   [#permalink] 13 Oct 2018, 20:52
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Need expert advice - Is 0 a perfect square on the GMAT?

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