Arithmetic Series Sum Formula Quizmaster
Review the Lesson | MATHguide homepage Updated June 18th, 2023

Status: Waiting for your answers.

Use the first 23 terms of the following arithmetic series for the problem below:

-11 - 9 - 7 - 5 - ...


What is the 23th term?		 a23 =
What is the sum of the first 23 terms? S23 =