यदि ${C_0}, {C_1}, {C_2}, ......., {C_n}$ द्विपद गुणांक हैं,तो $2.{C_1} + {2^3}.{C_3} + {2^5}.{C_5} + ....$ का मान ज्ञात कीजिए।

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

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

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यदि $P_{n}$,$(1+x)^{n}$ के विस्तार में द्विपद गुणांकों का गुणनफल दर्शाता है,तो $\frac{P_{n+1}}{P_n}=$

यदि $(1 + x + x^2)^n = a_0 + a_1x + a_2x^2 + \dots + a_{2n}x^{2n}$ है,तो $a_0 + a_3 + a_6 + \dots =$

यदि ${ }^{n} C_0+\frac{1}{2}{ }^{n} C_1+\frac{1}{3}{ }^{n} C_2+\ldots+\frac{1}{n+1}{ }^{n} C_{n}=\frac{1023}{10}$ है,तो $n=$

$\frac{C_1}{C_0} + 2\frac{C_2}{C_1} + 3\frac{C_3}{C_2} + \dots + 15\frac{C_{15}}{C_{14}} = $

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