$(1+x)^n$ ના વિસ્તરણમાં,$\frac{C_1}{C_0} + 2 \frac{C_2}{C_1} + 3 \frac{C_3}{C_2} + \ldots + n \frac{C_n}{C_{n-1}}$ ની કિંમત શોધો.

  • A
    $\frac{n(n+1)}{2}$
  • B
    $\frac{n}{2}$
  • C
    $\frac{n+1}{2}$
  • D
    $n(n+1)$

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