WBJEE 2024 Math Paper

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Question : 68 of 75

Marks: +1, -0

If n is a positive integer, the value of

(2n+1)nC0+(2n−1)nC1+(2n−3)nC2+...+1⋅‌nCn is

(n+1)2n
3‌n ‌
f′(2) where f(x)=xn+1
(n+1)2n+1

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