Question

is this series convergent or divergent? if convergent find its sum: (1/3)+(1/6)+(1/9)+(1/12)+(1/15)+... can somebody help me with this one?

Answer 1

denominator is arithmetic, so no

Answer 2

\[\sum\frac{1}{3+3n}\]

Answer 3

is arithmetic? can you explain it please?

Answer 4

it's 1/3n btw