જો $1+\frac{\sqrt{3}-\sqrt{2}}{2 \sqrt{3}}+\frac{5-2 \sqrt{6}}{18}+\frac{9 \sqrt{3}-11 \sqrt{2}}{36 \sqrt{3}}+\frac{49-20 \sqrt{6}}{180}+\ldots$ અનંત સુધી $= 2\left(\sqrt{\frac{b}{a}}+1\right) \log _e\left(\frac{a}{b}\right)$,જ્યાં $a$ અને $b$ એ પૂર્ણાંકો છે અને $\operatorname{gcd}(a, b)=1$,તો $11 a+18 b$ ની કિંમત ............... થાય.

  • A
    $76$
  • B
    $25$
  • C
    $36$
  • D
    $15$

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$\frac{m - n}{m + n} + \frac{1}{3}\left( \frac{m - n}{m + n} \right)^3 + \frac{1}{5}\left( \frac{m - n}{m + n} \right)^5 + \dots \infty = $

શ્રેણી $\frac{1}{2 \times 3} + \frac{1}{4 \times 5} + \frac{1}{6 \times 7} + \dots = $ નો સરવાળો શોધો.

$\left( \frac{a - b}{a} \right) + \frac{1}{2} \left( \frac{a - b}{a} \right)^2 + \frac{1}{3} \left( \frac{a - b}{a} \right)^3 + \dots = $

જો $S = \sum\limits_{n = 0}^\infty \frac{(\log x)^{2n}}{(2n)!}$ હોય,તો $S$ =

$\log_{3} e - \log_{9} e + \log_{27} e - \dots$ ની કિંમત કેટલી થાય?

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