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# I suppose this needs spiliting 1001 n 101 in order to take

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Intern
Joined: 27 Aug 2006
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I suppose this needs spiliting 1001 n 101 in order to take [#permalink]

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27 Sep 2006, 16:40
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I suppose this needs spiliting 1001 n 101 in order to take out common element ,but i couldnt figure out
could somone pls explain ??

thanks
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FactorQ.doc [48.5 KiB]

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Manager
Joined: 25 May 2006
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27 Sep 2006, 17:33
=(1001^2-999^2)/(101^2-99^2)
=[(1001+999)(1001-999)]/[(101+99)(101-99)]
=(2000*2)/(200*2)
=2000/200
=10
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Who is John Galt?

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Director
Joined: 06 Sep 2006
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Re: GmatPrep- Factor Q [#permalink]

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27 Sep 2006, 17:44
GmatInstinct wrote:
I suppose this needs spiliting 1001 n 101 in order to take out common element ,but i couldnt figure out
could somone pls explain ??

thanks

(1000 + 1)^2 - (1000 - 1)^2 / (100 + 1)^2 - (100 - 1)^2

1000^2+2000 + 1 - 1000^2+2000-1 / 100^2+200+1 - 100^2 +200 - 1

2 * 2000/ (2 * 200) = 10

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Intern
Joined: 27 Aug 2006
Posts: 32

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27 Sep 2006, 18:08
Thanks guys ..
Xny , i never looked at it from that perspecitve at all

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27 Sep 2006, 18:08
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# I suppose this needs spiliting 1001 n 101 in order to take

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