$^{10}C_1 + ^{10}C_3 + ^{10}C_5 + ^{10}C_7 + ^{10}C_9 = $

  • A
    $2^9$
  • B
    $2^{10}$
  • C
    $2^{10} - 1$
  • D
    इनमें से कोई नहीं

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$0, 1, 2, \dots, n$ मानों का माध्य,जिनके संगत भार (weights) क्रमशः $^nC_0, ^nC_1, ^nC_2, \dots, ^nC_n$ हैं,क्या होगा?

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यदि $(\frac{1}{^{15}C_{0}}+\frac{1}{^{15}C_{1}})(\frac{1}{^{15}C_{1}}+\frac{1}{^{15}C_{2}})...(\frac{1}{^{15}C_{12}}+\frac{1}{^{15}C_{13}}) = \frac{a^{13}}{^{14}C_{0} \cdot ^{14}C_{1} \cdot ... \cdot ^{14}C_{12}}$ है,तो $30a$ का मान ज्ञात कीजिए:

योगफल ज्ञात कीजिए: $\left( \binom{21}{1} - \binom{10}{1} \right) + \left( \binom{21}{2} - \binom{10}{2} \right) + \left( \binom{21}{3} - \binom{10}{3} \right) + \dots + \left( \binom{21}{10} - \binom{10}{10} \right) = $

यदि $p$ और $q$ धनात्मक पूर्णांक हैं,तो $(1 + x)^{p + q}$ के विस्तार में $x^p$ और $x^q$ के गुणांक क्या होंगे?

यदि $(1 - x + x^2)^n = a_0 + a_1x + a_2x^2 + .... + a_{2n}x^{2n}$ है,तो $a_0 + a_2 + a_4 + .... + a_{2n} = $

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