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Q.If S=∑k=1n1(nk)S = \sum_{k=1}^{n} \dfrac{1}{\binom{n}{k}}, then SS equals

a
n2n−1\dfrac{n}{2^{n-1}}
b
n+12n\dfrac{n+1}{2^n}
c
n2n\dfrac{n}{2^n}
d
2nn\dfrac{2^n}{n}

Correct Answer: Option A

The correct solution involves applying the fundamental concept to derive the final value step by step...

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