यदि $(1 + x)^n = \sum\limits_{r = 0}^n {{C_r}{x^r}} $ है,तो $\left( {1 + \frac{{{C_1}}}{{{C_0}}}} \right)\left( {1 + \frac{{{C_2}}}{{{C_1}}}} \right)....\left( {1 + \frac{{{C_n}}}{{{C_{n - 1}}}}} \right) = $

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

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यदि $C_j = {}^{n}C_j$ है,तो $C_0 C_r + C_1 C_{r+1} + C_2 C_{r+2} + \ldots + C_{n-r} C_n = $

यदि $(1+x)^n = a_0 + a_1 x + a_2 x^2 + \ldots + a_n x^n$ और $a_0 - a_2 + a_4 - a_6 + \ldots = k \cos \frac{n \pi}{4}$ है,तो $k = $

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 $^nC_2 =$

यदि ${}^n C_0, {}^n C_1, {}^n C_2, \ldots, {}^n C_n$ द्विपद गुणांक $(1+x)^n$ के विस्तार में हैं,तो $n=10$ के लिए,$\sum_{r=1}^{10} {}^n C_r \cdot r(r-4)$ का मान ज्ञात कीजिए।

मान लीजिए $(1 + x)^{10} = \sum_{r=0}^{10} C_r x^r$ और $(1 + x)^7 = \sum_{r=0}^7 d_r x^r$ है। यदि $P = \sum_{r=0}^5 C_{2r}$ और $Q = \sum_{r=0}^3 d_{2r+1}$ है,तो $\frac{P}{2Q}$ का मान ज्ञात कीजिए।

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