The sum to n term of the series 1(1!)+2(2!)+3(3!)+

The sum to n terms of the series [1. (1!)+2. (2!)+ 3.(3!)+…] is-

Find the sum to n terms of the series , (1)/(1.2)+(1)/(2.3)+(1)/(3.4)+.... ?

Let H_(n)=1+(1)/(2)+(1)/(3)+ . . . . .+(1)/(n) , then the sum to n terms of the series (1^(2))/(1^(3))+(1^(2))/(1^(3))+(2^(2))/(2^(3))+(1^(2)+2^(2)+3^(2))/(1^(3)+2^(3)+3^(3))+ . . . , is

The sum of n terms of the series 1+2 (1 + (1)/(n)) +3 (1+ (1)/(n))^(2) + ….is

The sum to n terms of the series 1+2 (1+(1)/(n))+3 (1+(1)/(n))^(2)+ cdots is given by

Find the sum to n terms of the series 1*2^(2)+2*3^(2)+3*4^(2)+...