A) \[n-\frac{1}{2}(1-{{3}^{-n}})\]
B) \[n-\frac{1}{2}({{3}^{-n}}-1)\]
C) \[n-\frac{1}{2}({{3}^{n}}-1)\]
D) \[n+\frac{1}{2}({{3}^{n}}-1)\]
Correct Answer: A
Solution :
[a] Assigning values to n, we get the answer.
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