C_ 1 1 + C_ 2 3 + C_ 4 5 + C_ 5 7 + is equal to

Mathematics · JEE Main · NTA Exams — Binomial Theorem And Its Simple Applications

1. \(\frac{2^{n-1}}{n-1}\)
2. \(\frac{2^{n+1}}{n+3}\)
3. \(\frac{z^{n}}{n+1}\)
4. \(\frac{2^{n-2}}{n}\)

Answer

(B) 2^ n+1 n+3

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