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[Post New]12 May 2008 09:14:08 IST
    Subject: Sum of 1 + (1+x) +(1+x+x^2)+(1+x+x^2+x^3)+(1+x+x^2+x^3+x^4).. up to n terms
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chinnu (83)

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Olaaa!! Perrrfect answer. 11  [25 rates]
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on adding u get
n(1)+n-1(x)+n-2(x^2)+.....+1(x^n)
which is an agp and u can solve fm there.
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