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Q.The value of ∑r=0n(−1)r(n+rn)\sum_{r=0}^{n} (-1)^r \binom{n+r}{n} is

a
(−1)n(-1)^n
b
(−1)n(2nn)(-1)^n \binom{2n}{n}
c
00
d
11

Correct Answer: Option A

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

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The value of \sum{r=0}^{n} (-1)^r \binom{n+r}{n} is... | ParikshaNiti