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[" Sum of the series "1+3+7+15+31+..." t...

[" Sum of the series "1+3+7+15+31+..." to "n],[" terms is- "],[[" (A) "2^(n)-2-n," (B) "2^(n+1)+2+n],[" (C) "2^(n+1)-2-n," (D) None of these "]]

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