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Algebra

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Joined:	26 Dec 2007
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28 Dec 2007 09:49:49 IST

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3/4 + 5/36 + 7/144 + 9/400 +...infinite terms

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3/4 + 5/36 + 7/144 + 9/400 +...infinite terms

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Decoder

Blazing goIITian

Joined: 1 Apr 2007

Posts: 1084

28 Dec 2007 13:40:16 IST

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first decode.. the series...its numerator..2r+1..denominator..is a two degree g.p..
32,128,256 being its terms....if u knoe how to solve 2 degree g.p its fine..its challenging thereafter also..will give u soln later..

anit sahu

Hot goIITian

Joined: 17 Feb 2007

Posts: 169

28 Dec 2007 13:45:11 IST

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rather write the terms like this

(1- 1/4)+(1/4 -1/9)+(1/9-1/16)+_____

all the terms will cancel

and u will get ans 1

Decoder

Blazing goIITian

Joined: 1 Apr 2007

Posts: 1084

28 Dec 2007 13:48:17 IST

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brilliant yaar!!

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