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# Is h^2 = h?

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Intern
Joined: 06 Jan 2013
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04 May 2013, 01:50
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Question Stats:

82% (00:33) correct 18% (00:32) wrong based on 168 sessions

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Is h^2 = h ?

(1) h + h = h
(2) h – h = h
[Reveal] Spoiler: OA
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Location: Italy
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Re: Is h^2 = h? [#permalink]

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04 May 2013, 01:53
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Is h^2 = h ?

The question is: is $$h=0$$ or $$h=1$$?

(1) h + h = h
So $$h=0$$ Sufficient

(2) h – h = h
So $$-h=0$$ , $$h=0$$ Sufficient

D
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Intern
Joined: 05 Oct 2012
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GMAT Date: 11-10-2012
Re: Is h^2 = h? [#permalink]

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04 May 2013, 07:05
not getting....pl explain
Math Expert
Joined: 02 Sep 2009
Posts: 44654
Re: Is h^2 = h? [#permalink]

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04 May 2013, 07:10
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sudhirroninsingh wrote:
not getting....pl explain

Is h^2 = h ?

Is $$h^2 = h$$? --> is $$h^2 - h =0$$? --> is $$h(h-1)=0$$? --> is $$h=0$$ or $$h=1$$?

(1) h + h = h --> 2h=h --> h=0. Sufficient.
(2) h – h = h --> 0=h. Sufficient.

Hope it's clear.
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Re: Is h^2 = h? [#permalink]

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07 May 2013, 13:47
does anyo0ne here know how to create a post it keeps giving me stupid stuff like "You must specify an official answer " what does that even mean?
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Re: Is h^2 = h? [#permalink]

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07 May 2013, 18:55
does anyo0ne here know how to create a post it keeps giving me stupid stuff like "You must specify an official answer " what does that even mean?

Just go to the concerned forum like ... if you wish to post a PS Quant Question ,, then go to PS Quant Forum ... . & in that .... there would be a big text box for writing your Post & below this box .. there will be an option to select the Official Answer .... You just select the OA that you know .... & click on submit button below all this .. Hope it Helps !!
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Re: Is h^2 = h? [#permalink]

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08 May 2013, 06:01
does anyo0ne here know how to create a post it keeps giving me stupid stuff like "You must specify an official answer " what does that even mean?

Use the A, B, C, D, E radio buttons to indicate the official answer (OA).

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Re: Is h^2 = h? [#permalink]

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30 Oct 2017, 06:07
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Is h^2 = h?   [#permalink] 30 Oct 2017, 06:07
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