[" Find the sum up to n terms and infinity also of the series "],[(1)/(1.2.3)+(1)/(2.3.4)+(1)/(3.45)+.......]

Find the nth term sum of n terms and sum to infinity terms of the series (1)/(2.5)+(1)/(5.8)+ (1)/(8.11)+ ...

Find the sum of the series to n terms and to infinity : (1)/(1.3)+ (1)/(3.5) +(1)/(5.7) +(1)/(7.9)+...

Sum up to n terms the series

Find the sum of n terms and sum to infinity of the following series : (1)/(2cdot4)+(1)/(4cdot6)+(1)/(6cdot8)+…

Find the sum of n terms and sum to infinity of the following series : (1)/(2cdot4)+(1)/(4cdot6)+(1)/(6cdot8)+…

Find the sum up to n terms of the series : 1+(6)/(7)+(11)/(49)+(16)/(343)+….

Find sum the series (n)/(1.2*3)+(n-1)/(2.3*4)+(n-2)/(3.4*5)+......... up to n terms..-

Find the sum to n terms of the series 3+33+333+… to n terms.