Sum of the following series to `n` term: `1/(1* 4)+1/(4* 7)+1/(7*10)+ ...............`

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

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

Sum of the following series to n term: 1+3+7+13+21+ ............

Sum of the following series to n term: 1+3+7+13+21+ ............

Find the sum of the following series to n term: 1. 2. 5+2. 3. 6+3. 4. 7+..........

Find the sum of the following series to n term: 1. 2. 5+2. 3. 6+3. 4. 7+..........

Find the sum to n terms of each of the following series : (1)/(1.4) + (1)/(4.7) + (1)/(7.10)+…

Sum the following series to n terms and to infinity : (i) (1)/(1.4.7) + (1)/(4.7.10) + (1)/(7.10.13) + ... (ii) sum_(r=1)^(n) r (r + 1) (r + 2) (r + 3) (iii) sum_(r=1)^(n) (1)/(4r^(2) - 1)

Sum the following series to n terms and to infinity: (1)/(1.4.7)+(1)/(4.7.10)+(1)/(7.10.13)+...