[" (1) The sum "(3)/(1^(2))+(5)/(1^(2)+2...

[" (1) The sum "(3)/(1^(2))+(5)/(1^(2)+2^(2))+(7)/(1^(2)+2^(2)+3^(2))+..." upto 11-terms is :- "," [JEE-MAINS Online "2013" ] "^(2)" a "],[[" (A) "(11)/(4)," (B) "(60)/(11)," (C) "(7)/(2)," (D) "(11)/(2)," -4"]]

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The sum of the series (3)/(1^(2))+(5)/(1^(2)+2^(2))+(7)/(1^(2)+2^(2)+3^(2))+...... upto n terms,is

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