यदि $(1 + x)^n = C_0 + C_1x + C_2x^2 + .......... + C_nx^n$ है,तो $C_0^2 + C_1^2 + C_2^2 + C_3^2 + ...... + C_n^2$ =

  • A
    $\frac{n!}{n!n!}$
  • B
    $\frac{(2n)!}{n!n!}$
  • C
    $\frac{(2n)!}{n!}$
  • D
    इनमें से कोई नहीं

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Similar Questions

$-{ }^{15}C_{1} 2 \cdot { }^{15}C_{2} - 3 \cdot { }^{15}C_{3} \ldots - 15 \cdot { }^{15}C_{15} { }^{14}C_{1} { }^{14}C_{3} { }^{14}C_{5} \ldots { }^{14}C_{11}$ का मान है

$2 \le r \le n$ के लिए,$\binom{n}{r} + 2\binom{n}{r-1} + \binom{n}{r-2}$ का मान ज्ञात कीजिए।

यदि $3 \leq r \leq 30$ के लिए,$\binom{30}{30-r} + 3\binom{30}{31-r} + 3\binom{30}{32-r} + \binom{30}{33-r} = \binom{m}{r}$ है,तो $m$ का मान ज्ञात कीजिए:

यदि $\frac{{}^{11}C_1}{2} + \frac{{}^{11}C_2}{3} + \dots + \frac{{}^{11}C_9}{10} = \frac{n}{m}$ जहाँ $\gcd(n, m) = 1$ है,तो $n + m$ का मान ज्ञात कीजिए।

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 = $

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