$z \in \mathbb{C}$ के लिए,यदि $(1+z)^n = 1 + { }^n C_1 z + { }^n C_2 z^2 + \ldots + { }^n C_n z^n$ और $\sum_{r=0}^{100} { }^{100} C_r \sin(rx) = \left(2 \cos \frac{x}{2}\right)^{100} \sin(kx)$ है,तो $k =$

  • A
    $25$
  • B
    $100$
  • C
    $50$
  • D
    $75$

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Similar Questions

यदि $(1 + x)^{15} = C_0 + C_1x + C_2x^2 + ...... + C_{15}x^{15}$ है,तो $C_2 + 2C_3 + 3C_4 + .... + 14C_{15} = $

यदि $^nC_r = C_r$ और $2 \frac{C_1}{C_0} + 4 \frac{C_2}{C_1} + 6 \frac{C_3}{C_2} + \dots + 2n \frac{C_n}{C_{n-1}} = 650$ है,तो $^nC_2 =$

$\sum_{r=1}^{15} r^2 \left( \frac{{}^{15}C_r}{{}^{15}C_{r-1}} \right) = $

यदि $\sum_{r=1}^{30} \frac{r^2({}^{30}C_r)^2}{{}^{30}C_{r-1}} = \alpha \times 2^{29}$ है,तो $\alpha$ का मान ज्ञात कीजिए।

यदि $n$ एक धनात्मक पूर्णांक है,तो $(2n+1) ^nC_0 + (2n-1) ^nC_1 + (2n-3) ^nC_2 + \ldots + 1 \cdot ^nC_n$ का मान क्या है?

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