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[Post New]16 Apr 2008 23:37:40 IST
    Subject: PROGRESSION
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sboosy (3063)

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Olaaa!! Perrrfect answer. 539  [723 rates]
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1,r,r^2,.... be the terms
S = 1/(1-r) which means r = 1-1/S .......(1)

after squaring the terms are 1,r^2,r^4,.....
S' = new sum = 1/(1-r^2)
Using 1

we get
S' = new sum = S^2/(2S-1)
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