Is h^2 = h? : GMAT Data Sufficiency (DS)
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# Is h^2 = h?

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04 May 2013, 00:50
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Is h^2 = h ?

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

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04 May 2013, 00:53
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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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Re: Is h^2 = h? [#permalink]

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04 May 2013, 06:05
not getting....pl explain
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Re: Is h^2 = h? [#permalink]

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04 May 2013, 06:10
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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, 10:03
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plzdonotbugme wrote:
Is h^2 = h ?

(1) h + h = h
(2) h – h = h

I also followed the same approach as Zarrolou & Bunuel.... followed & get the answer as D ................
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Re: Is h^2 = h? [#permalink]

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07 May 2013, 12:47
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, 17:55
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, 05:01
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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20 Apr 2016, 12:17
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Re: Is h^2 = h?   [#permalink] 20 Apr 2016, 12:17
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