$^{4n}C_0 + ^{4n}C_4 + ^{4n}C_8 + ... + ^{4n}C_{4n}$ 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 $(1 + x)^n = C_0 + C_1x + C_2x^2 + ... + C_nx^n$ હોય,તો $C_0 + C_2 + C_4 + C_6 + ...$ ની કિંમત શું થાય?

જો $C_j = {}^{n}C_j$ હોય,તો $C_0 C_r + C_1 C_{r+1} + C_2 C_{r+2} + \ldots + C_{n-r} C_n = $

જો $^nC_0 + \frac{1}{2} ^nC_1 + \frac{1}{3} ^nC_2 + \dots + \frac{1}{n+1} ^nC_n = \frac{1023}{10}$ હોય, તો $n =$ શોધો.

ધારો કે $(1+2x)^{20} = a_0 + a_1x + a_2x^2 + \dots + a_{20}x^{20}$. તો $3a_0 + 2a_1 + 3a_2 + 2a_3 + 3a_4 + 2a_5 + \dots + 2a_{19} + 3a_{20}$ ની કિંમત શોધો.

ધારો કે $\binom{n}{k} = \frac{n!}{k!(n-k)!}$. તો સરવાળો $\frac{1}{2^{10}} \sum_{k=0}^{10} \binom{10}{k} k^2$ એ કયા અંતરાલમાં આવે છે?

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