જો $(1 - x + x^2)^n = a_0 + a_1x + a_2x^2 + \dots + a_{2n}x^{2n}$ હોય,તો $a_0 + a_2 + a_4 + \dots + a_{2n}$ ની કિંમત શોધો.

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

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$z \in \mathbb{C}$ માટે,જો $(1+z)^n = 1 + { }^n C_1 z + { }^n C_2 z^2 + \ldots + { }^n C_n z^n$ અને $\sum_{r=0}^{100} { }^{100} C_r \sin(rx) = \left(2 \cos \frac{x}{2}\right)^{100} \sin(kx)$ હોય,તો $k =$

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?

$C_0 - C_1 + C_2 - C_3 + \dots + (-1)^n C_n$ ની કિંમત શું થાય?

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

$\binom{50}{4} + \sum_{i=1}^{6} \binom{56-i}{3} = \dots$

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