Question:
If nth term of a series is n+(-1)n-1, n = 1,2,3,..., then the sum of first 40 terms of the series is
If nth term of a series is n+(-1)n-1, n = 1,2,3,..., then the sum of first 40 terms of the series is
Updated On: May 31, 2024
- 810
- 820
- 821
- 819
- 780
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The Correct Option is B
Solution and Explanation
The correct option is (B) : 820
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