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 $\alpha = \frac{5}{2! \times 3} + \frac{5 \times 7}{3! \times 3^2} + \frac{5 \times 7 \times 9}{4! \times 3^3} + \ldots$ હોય,તો $\alpha^2 + 4\alpha =$

અનંત શ્રેણી $1+\frac{1}{3}+\frac{1 \cdot 3}{3 \cdot 6}+\frac{1 \cdot 3 \cdot 5}{3 \cdot 6 \cdot 9}+\frac{1 \cdot 3 \cdot 5 \cdot 7}{3 \cdot 6 \cdot 9 \cdot 12}+\ldots$ નો સરવાળો કેટલો થાય?

જો $x$ આંકડાકીય રીતે એટલું નાનું હોય કે $x^2$ અને $x$ ની ઉચ્ચ ઘાતોને અવગણી શકાય, તો $\left(1+\frac{2x}{3}\right)^{3/2} \cdot (32+5x)^{-1/5}$ આશરે કોના બરાબર થાય?

$1 - \frac{3}{16} + \frac{1 \cdot 4}{1 \cdot 2} \left(\frac{3}{16}\right)^2 - \frac{1 \cdot 4 \cdot 7}{1 \cdot 2 \cdot 3} \left(\frac{3}{16}\right)^3 + \ldots$

જો $(a + bx)^{-2} = \frac{1}{4} - 3x + \dots$ હોય,તો $(a, b) = $

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