Class 11MathematicsBinomial TheoremGeneral term, Coefficient of any power of x, Independent term, Middle term and Greatest term and Greatest coefficient
DifficultIf $C_j$ stands for ${}^nC_j$,then $\frac{C_1}{C_0} + \frac{2 \times C_2}{C_1} + \frac{3 \times C_3}{C_2} + \ldots + \frac{n \times C_n}{C_{n-1}} = $
- A$\sum_{k=1}^{n} k^2$
- B$\sum_{k=1}^{n} \frac{k}{2}$
- C$\sum_{k=1}^{n} 2k$
- D$\sum_{k=1}^{n} k$
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