જો $(1-x+x^2)^n = a_0 + a_1 x + \ldots + a_{2n} x^{2n}$ હોય,તો $a_0 + a_2 + a_4 + \ldots + a_{2n}$ ની કિંમત શોધો.

  • A
    $3^n + \frac{1}{2}$
  • B
    $3^n - \frac{1}{2}$
  • C
    $\frac{3^n - 1}{2}$
  • D
    $\frac{3^n + 1}{2}$

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Similar Questions

જો $n$ એક ધન પૂર્ણાંક હોય,તો $\sum_{r=1}^n r^2 \cdot C_r = (\ldots \ldots \ldots) 2^{n-2}$

જો $3 \leq r \leq 30$ માટે,$\binom{30}{30-r} + 3\binom{30}{31-r} + 3\binom{30}{32-r} + \binom{30}{33-r} = \binom{m}{r}$ હોય,તો $m$ ની કિંમત શોધો:

$\sum_{k=0}^{20} \left({}^{20}C_{k}\right)^{2}$ ની કિંમત શું થાય?

$(1+x)^n$ ના વિસ્તરણમાં,$\frac{C_1}{C_0} + 2 \frac{C_2}{C_1} + 3 \frac{C_3}{C_2} + \ldots + n \frac{C_n}{C_{n-1}}$ ની કિંમત શોધો.

$\mathop \sum \limits_{0 \le i < j \le n} i \binom{n}{j}$ ની કિંમત શોધો.

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