What is the sum of the arithmetic series 2 + 5 + 8 + ... + 53?
1 Answer
Feb 21, 2016
First, we must find the number of terms, n.
Explanation:
Now that we know the number of terms we can use the formula
The sum is of 495.
When finding the sum of an arithmetic series, there are two formulas that you may use: the one presented above and
Practice exercises:

Find the sum of the following series:
#5, 11, 17, ..., 131# 
Find the sum of a series with the following characteristics.

First three terms:
#7, 1, 9, ...# 
#n = 33#
Hopefully this helps!