જો $(1 + x)^{15} = C_0 + C_1x + C_2x^2 + ...... + C_{15}x^{15}$ હોય,તો $C_2 + 2C_3 + 3C_4 + .... + 14C_{15} = $

  • A
    $14 \cdot 2^{14}$
  • B
    $13 \cdot 2^{14} + 1$
  • C
    $13 \cdot 2^{14} - 1$
  • D
    આમાંથી કોઈ નહીં

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Similar Questions

જો $\sum\limits_{i = 0}^4 {^{4 + i}} {C_i} + \sum\limits_{j = 6}^9 {^{3 + j}} {C_j} = {\,^x}{C_y}$ ($x$ એ અવિભાજ્ય સંખ્યા છે),તો નીચેનામાંથી કયું ખોટું છે?

જો $C_r = { }^n C_r$ હોય,તો $C_0 + C_4 + C_8 + C_{12} + \ldots$ નો સરવાળો શોધો.

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:

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

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જો $\sum\limits_{K = 1}^{12} {12K \cdot {^{12}C_K} \cdot {^{11}C_{K - 1}}} $ એ $\frac{{12 \times 21 \times 19 \times 17 \times \dots \times 3}}{{11!}} \times {2^{12}} \times p$ બરાબર હોય,તો $p$ ની કિંમત શોધો.

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