$\frac{1}{1 \cdot 2 \cdot 3} + \frac{1}{2 \cdot 3 \cdot 4} + \frac{1}{3 \cdot 4 \cdot 5} + \frac{1}{4 \cdot 5 \cdot 6}$ का मान ज्ञात कीजिए।

  • A
    $\frac{7}{30}$
  • B
    $\frac{1}{3}$
  • C
    $\frac{13}{30}$
  • D
    इनमें से कोई नहीं

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यदि $x = 1 + \sqrt{2} + \sqrt{3}$ है,तो $x^{2} - 2x + 4$ का मान ज्ञात कीजिए।

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$111 \frac{1}{2} + 111 \frac{1}{6} + 111 \frac{1}{12} + 111 \frac{1}{20} + 111 \frac{1}{30}$ का मान क्या है?

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