# Sequences and Series

A series is a sum of the terms of a sequence and we add all the terms together if it is a finite sequence as they have first and last terms.

Infinite sequence will not have last term: $a_{1}+a_{2}+a_{3}+.....$

A series is a sum of the terms of a sequence and we add all the terms together if it is a finite sequence as they have first and last terms.

Infinite sequence will not have last term: $a_{1}+a_{2}+a_{3}+.....$

Sub Topics