Math, asked by Nareshk5771, 10 months ago

What is the sum of the first 21 terms of the arithmetic series −5+(−3)+(−1)+1+?

Answers

Answered by sharathkk432

1

Answer:

use sn formula you will get answer 315

Answered by emilyasbury46

0

Answer:

315

Step-by-step explanation:

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