ધારો કે $Q(x)$ એ $n$ ઘાતવાળી બહુપદી છે. જો $Q(1)=1$ અને $\frac{Q(2x)}{Q(x+1)}+\frac{56}{x+7}-8=0$ હોય,તો ${}^nC_0+{}^nC_1+\ldots+{}^nC_n$ ની કિંમત કેટલી થાય?

  • A
    $32$
  • B
    $64$
  • C
    $8$
  • D
    $16$

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જો $(1 + x)^n = C_0 + C_1x + C_2x^2 + .......... + C_nx^n$ હોય,તો $C_0^2 + C_1^2 + C_2^2 + C_3^2 + ...... + C_n^2$ =

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જો $\sum\limits_{i = 1}^{20} {\left( {\frac{{{}^{20}{C_{i - 1}}}}{{{}^{20}{C_i} + {}^{20}{C_{i - 1}}}}} \right)} ^3 = \frac{k}{21}$ હોય,તો $k$ ની કિંમત શોધો.

જો $1^2 \cdot ^{20}C_1 + 2^2 \cdot ^{20}C_2 + 3^2 \cdot ^{20}C_3 + \dots + 20^2 \cdot ^{20}C_{20} = A(2^\beta)$ હોય,તો ક્રમયુક્ત જોડ $(A, \beta)$ ની કિંમત શોધો.

જો ${ }^{n} C_0+\frac{1}{2}{ }^{n} C_1+\frac{1}{3}{ }^{n} C_2+\ldots+\frac{1}{n+1}{ }^{n} C_{n}=\frac{1023}{10}$ હોય,તો $n=$

જો $(1+x)^n = C_0 + C_1 x + C_2 x^2 + \ldots + C_n x^n$ હોય,તો $C_0 + 2 C_1 + 3 C_2 + \ldots + (n+1) C_n$ ની કિંમત શોધો.

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