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[" The sum to "n" terms of the series "(1)/(sqrt(1)+sqrt(3))+(1)/(sqrt(3)+sqrt(5))+(1)/(sqrt(5)+sqrt(7))+..." is "],[[" (a) "sqrt(2n+1)," (b) "(1)/(2)sqrt(2n+1)," (c) "sqrt(2n+1)-1," (d) "(1)/(2){sqrt(2n+1)-1}]]

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