Question

The sum of an 84-number series is –7,980. What is the sum of the first and last numbers?

Answer 1

B) -190

Explanation:

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Answer 2

- 190

Explanation:

Since the sum of 84 number series is -7980. We have to find the sum of first and last numbers. Since sum of an arithmetic sequence is represented as. S =. (First + last) =. So the total of first and last term is (-190). Option B. -190 is the correct option.