Find the Sum of the First N Terms of the Following

question 300

Multiple Choice

Find the sum of the first n terms of the following arithmetic sequence.
- $$a _ { 1 } = 1 , d = - 1 ; \quad n = 6$$

• A) 6
• B) -7
• C) \(- 5\)
• D) \(- 9\)

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