$^{4n}C_0 + ^{4n}C_4 + ^{4n}C_8 + ... + ^{4n}C_{4n}$ નું મૂલ્ય શું છે?

  • A
    $2^{4n - 2} + (-1)^n 2^{2n - 1}$
  • B
    $2^{4n - 2} + 2^{2n - 1}$
  • C
    $2^{2n - 1} + (-1)^n 2^{4n - 2}$
  • D
    આમાંથી કોઈ નહીં

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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 $(1 - x + x^2)^n = a_0 + a_1x + a_2x^2 + .... + a_{2n}x^{2n}$ હોય,તો $a_0 + a_2 + a_4 + .... + a_{2n} = $

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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.

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.

જો $n$ એ $1$ કરતા મોટો ધન પૂર્ણાંક હોય,તો $3({ }^n C_0) - 8({ }^n C_1) + 13({ }^n C_2) - 18({ }^n C_3) + \ldots$ $(n+1)$ પદો સુધી $=$

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