ધારો કે $\binom{n}{k}$ એ ${}^{n}C_{k}$ દર્શાવે છે અને $\left[\begin{array}{c} n \\ k \end{array}\right]=\begin{cases} \binom{n}{k}, & \text{જો } 0 \leq k \leq n \\ 0, & \text{અન્યથા} \end{cases}$. જો $A_{k}=\sum_{i=0}^{9}\binom{9}{i}\left[\begin{array}{c} 12 \\ 12-k+i \end{array}\right]+\sum_{i=0}^{8}\binom{8}{i}\left[\begin{array}{c} 13 \\ 13-k+i \end{array}\right]$ અને $A_{4}-A_{3}=190p$ હોય,તો $p$ ની કિંમત શોધો:

  • A
    $50$
  • B
    $51$
  • C
    $48$
  • D
    $49$

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$\frac{C_1}{C_0} + 2 \cdot \frac{C_2}{C_1} + 3 \cdot \frac{C_3}{C_2} + \dots + n \cdot \frac{C_n}{C_{n-1}}$ નું મૂલ્ય શું થાય?

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$C_0 C_r + C_1 C_{r+1} + C_2 C_{r+2} + \dots + C_{n-r} C_n =$

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જો $(1+x-2x^2)^6 = 1+a_1x+a_2x^2+\ldots+a_{12}x^{12}$ હોય, તો $a_2+a_4+a_6+\ldots+a_{12}$ ની કિંમત શોધો.

જો $C_r = ^{100}C_r$ હોય,તો $1 \cdot C_0^2 - 2 \cdot C_1^2 + 3 \cdot C_2^2 - 4 \cdot C_3^2 + \dots + 101 \cdot C_{100}^2$ ની કિંમત શોધો.

$\frac{C_1}{C_0} + 2\frac{C_2}{C_1} + 3\frac{C_3}{C_2} + \dots + 15\frac{C_{15}}{C_{14}} = $

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