Find the sum of the following series: `2(2/3)+3 (2/3)+4(2/3)+… ` 60 terms

Find the sum of the following series: 2.3+3.4+ ……….to n terms

Find the sum of the following geometric series: (2)/(9)-(1)/(3)+(1)/(2)-(3)/(4)+rarr5 terms

Find the sum of the series 1 . 3^(2) + 2.5 ^(2) + 3.7^(2) +…+ to n terms

Find the sum of the following series to n term: 1. 2. 4+2. 3. 7+3. 4. 10+ .......

Find the sum to inifinity of the following series: 1+2/3+3/(3^(2))+4/(3^(3))+ ……………. Find the sum of the following (22-24) series:

Find the sum of the following infinite series (1)/(2)((1)/(5))^(2)+(2)/(3)((1)/(5))^(3)+(3)/(4)((1)/(5))^(4)+...

Find the sum of the following series to infinity: 2/5+3/5^(2)+2/5^(3)+3/5^(4)+oo

Find the sum of n terms of the series 1.2^(2)+2.3^(2)+3.4^(2)+

Find the sum of the following series to n term: 1^2-2^2+3^2-4^2+…....

Find the sum of the series: 1xx2^(2)+2xx3^(2)+3xx4^(2)+... "to n terms"