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zysi [14]
3 years ago
12

What is the sum of the terms of the series (−1) + (−2) + (−3) + . . . + (−10)?

Mathematics
1 answer:
Murrr4er [49]3 years ago
8 0
You can solve this problem by using the Gauss method. The Gauss method is a method where you can add the first and last numbers together, and then multiply by how many times that appears. Here, the sum of the first and last number is -11. In this sequence, it would appear ten times (since there are ten terms and the terms are used twice in every eleven). -11 * 5 is -55, so that means the answer to this question is -55. 
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