The sum r C r + r+1 C r + r+2 C r + ... + n C r (n > r) equals

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

1. ⁿC_r+1
2. ⁿ⁺¹C_r+1
   
3. ⁿ⁺¹C_r–1
4. ⁿ⁺¹C_r

Answer

(B) n+1 C r+1

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