Find the sum to n terms of the series (1.2.3) + (2.3.4) + (3.4.5) ...`

Find the nth term and the sum to n terms of the series 1.2+ 2.3 +3.4 + ...

If the sum of n term of the series (5)/(1.2.3) + (6)/(2.3.4) + ( 7)/(3.4.5)+"…." is a/2 - (n+b)/((n+1)(n+2)) , then

Find the sum of n terms of the series 1. 2^2+2. 3^2+3. 4^2+

Find the sum of n terms \ of the series: 1/(1. 2)+1/(2. 3)+1/(3. 4)+...............+1/(n.(n+1))

FInd the sum of infinite terms of the series 1/(1.2.3)+1/(2.3.4)+1/(3.4.5).....

Find the sum to n terms of the series: 1/(1. 3)+1/(3. 5)+1/(5. 7)+

Find the sum to n terms of the series : 1xx2xx3 + 2xx3xx4 + 3xx4xx5 + ...

Find the sum to n terms of the series : 1xx2xx3 + 2xx3xx4 + 3xx4xx5 + dot dot dot

Find the sum to n terms of the series : 1xx2xx3 + 2xx3xx4 + 3xx4xx5 + dot dot dot

Find the sum of first n terms of the series 1^(3) + 3^(3) + 5^(3) +…