જો $x=\frac{2 \cdot 5}{3 \cdot 6}-\frac{2 \cdot 5 \cdot 8}{3 \cdot 6 \cdot 9}\left(\frac{2}{5}\right)+\frac{2 \cdot 5 \cdot 8 \cdot 11}{3 \cdot 6 \cdot 9 \cdot 12}\left(\frac{2}{5}\right)^2-\ldots \infty$ હોય,તો $7^2(12 x+55)^3=$

  • A
    $3^8 5^3$
  • B
    $3^8 5^5$
  • C
    $3^3 5^5$
  • D
    $3^3 5^8$

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Similar Questions

જો $x = \frac{3}{10} + \frac{3 \cdot 7}{10 \cdot 15} + \frac{3 \cdot 7 \cdot 9}{10 \cdot 15 \cdot 20} + \ldots$ હોય,તો $5x + 8 = $

$\frac{1}{8} - \frac{7}{8 \times 12} + \frac{7 \times 10}{8 \times 12 \times 16} - \ldots =$

જો $|x|$ એટલું નાનું હોય કે $x^3$ અને $x$ ની ઉચ્ચ ઘાતોને અવગણી શકાય,તો $\frac{1}{\sqrt{4-x}(2+x)^3}$ નું આશરે મૂલ્ય શું થાય?

$1+\frac{4}{15}+\frac{4 \times 10}{15 \times 30}+\frac{4 \times 10 \times 16}{15 \times 30 \times 45}+\ldots \quad \infty=$

$1 + n(1 - \frac{1}{x}) + \frac{n(n + 1)}{2!}(1 - \frac{1}{x})^2 + \dots \infty$ નો સરવાળો શું થશે?

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