Evaluate `lim_(n->oo) sum_(r=2)^n n/(n+r)^2` (A) `3/4` (B) `2/3` (C) `2/9` (D) `1/2`

Evaluate lim_(n->oo)1/nsum_(r=n+1)^(2n)log_e(1+r/n)

Evaluate lim_ (n rarr oo) sum_ (r = 2) ^ (n) (n) / ((n + r) ^ (2)) (A) (3) / (4) (B) (2) / ( 3) (C) (2) / (9) (D) (1) / (2)

Evaluate: lim_(n rarr oo) (sum_(r=0)^( n) (1)/(2^(r))) .

Evaluate lim_ (n rarr oo) sum (r ^ (2)) / (r ^ (3) + n ^ (3))

lim_(n rarr oo) sum_(r=1)^(n) 1/n sec^(2) ((rpi)/(4n)) =

value of lim_ (n rarr oo) sum_ (r = 1) ^ (n) tan ^ (- 1) ((1) / (2r ^ (2))) is

Evaluate lim _( n to oo) sum_( r =1) ^(n -1) (1)/(sqrt(n ^(2) -r ^(2)))

lim_(nto oo)sum_(r=1)^(n)r/(n^(2)+n+4) equals

lim_(nto oo)sum_(r=1)^(n)r/(n^(2)+n+4) equals

Evaluate :lim_(n rarr oo)sum_(r=1)^(n)(1)/((n^(2)+r^(2))^(1/2))