SOLUTION: Using the formula for the sum of an arithmetic sequence, what is the sum of the first 20 terms?

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Question 73939: Using the formula for the sum of an arithmetic sequence, what is the sum of the first 20 terms?
Answer by psbhowmick(878) About Me  (Show Source):
You can put this solution on YOUR website!
What is the series? You have not given the Arithmetic Series!