1/n n+1)(n+2) (n +3)...(n +n) n 4, lim is equal to (a) 4e (o) 2e (b) 3e1 (d) e-1 lim07+1)(m+2) (m+3)...(m +n) l/n m is equal to (when n" m being fixed) (a) e (b

1/n n+1)(n+2) (n +3)...(n +n) n 4, lim is equal to (a) 4e (o) 2e (b) 3e1 (d) e-1 lim07+1)(m+2) (m+3)...(m +n) l/n m is equal to (when n" m being fixed) (a) e (b) e (d) None of these