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

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