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# 10^8 - 10^2 --------------- 10^7 - 10^3 approximately equals

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Manager
Joined: 27 Sep 2006
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10^8 - 10^2 --------------- 10^7 - 10^3 approximately equals [#permalink]  27 Jan 2007, 22:47
10^8 - 10^2
---------------
10^7 - 10^3

approximately equals 10.

How?
SVP
Joined: 05 Jul 2006
Posts: 1519
Followers: 5

Kudos [?]: 115 [0], given: 39

10^8 - 10^2
---------------
10^7 - 10^3

10^2(10^6-1)/10^3(10^4 - 1) =
10^2(10^6)/ 10^3(10^4) = (10^2 )(10^-1) = 10
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