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is x>y?

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amansingla4
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is x>y? [#permalink] New post   29 May 2006, 02:58
Is x>y?
1.(x-y)(x-y)>0
2.y<0

Please explain?



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Re: is x>y? [#permalink] New post   Updated on: 29 May 2006, 05:12
I'm sorry I misread st 1, so the explanation is not good, I still think the answer is E

Originally posted by thearch on 29 May 2006, 04:12.
Last edited by thearch on 29 May 2006, 05:12, edited 1 time in total.
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buzzgaurav
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Re: is x>y? [#permalink] New post   29 May 2006, 04:15
Also got E.
Same reasoning as above.
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Re: is x>y? [#permalink] New post   29 May 2006, 05:52
amansingla4 wrote:
Please explain.


St 1 doesn't help much
whatever square is positive

St 2 by itself is clearly insufficient

Combining doesn't yield any valuable additional piece of information

Right?
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mahesh004
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Re: is x>y? [#permalink] New post   29 May 2006, 08:32
Yeah it is E....no doubt
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positive soul
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Re: is x>y? [#permalink] New post   29 May 2006, 09:44
I don't want to spoil the "E" party but I think is "A" (unless I am falling in a trap).

(x-y) (x-y) > 0 is equal to x>y.

so it should be sufficient.
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Re: is x>y? [#permalink] New post   29 May 2006, 09:59
positive soul wrote:
I don't want to spoil the "E" party but I think is "A" (unless I am falling in a trap).

(x-y) (x-y) > 0 is equal to x>y.

so it should be sufficient.


amansingla4 wrote:
Is x>y?
1.(x-y)(x-y)>0
2.y<0


do this way:


st 1. (x-y)(x-y)>0
(x-y)^2 >0. now put some values for x and y, you find either is > than the other.

st 2. y<0 doesnot go anywhere.
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Re: is x>y? [#permalink] New post   29 May 2006, 10:11
Thanks Prof. :-D



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Re: is x>y? [#permalink]
29 May 2006, 10:11
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