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

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

 Here, Tn = (1 + 2 + 3+ … + n) =

Sum of n terms

Answered by  | 4th Jun, 2014, 03:23: PM