Question

How to find nth term of the series,and therefore Sum of n terms?

Answer 1

\[\Large S_n=\frac{1}{1.4} + \frac{1}{4.7} + \frac{1}{7.10}..n \]

Answer 2

@hartnn

Answer 3

n'th term 1/n(n+3)

Answer 4

but that doesn't match for n=3?

Answer 5

do this for every term