$1 - \frac{1}{8} + \frac{1}{8} \cdot \frac{3}{16} - \frac{1 \cdot 3 \cdot 5}{8 \cdot 16 \cdot 24} + \dots =$

  • A
    $\frac{2}{5}$
  • B
    $\frac{\sqrt{2}}{5}$
  • C
    $\frac{2}{\sqrt{5}}$
  • D
    આમાંથી કોઈ નહીં

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$1+\frac{1}{4}+\frac{1 \cdot 3}{4 \cdot 8}+\frac{1 \cdot 3 \cdot 5}{4 \cdot 8 \cdot 12}+\ldots$ ની કિંમત શોધો.

શ્રેણી $1+\frac{2}{3}\left(\frac{1}{8}\right)+\frac{2 \times 5}{3 \times 6}\left(\frac{1}{8}\right)^2+\frac{2 \times 5 \times 8}{3 \times 6 \times 9}\left(\frac{1}{8}\right)^3+\ldots$ નો સરવાળો શોધો.

જો $|x| > 1$ હોય,તો $(1 + x)^{-2} = $

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$0 < x < 1$ માટે,$\left(1+\frac{1}{x}\right)^{\frac{1}{2}}$ નું વિસ્તરણ શું છે?

જો $(1 + x)^{7/2}$ ના વિસ્તરણમાં $(r + 1)^{th}$ પદ પ્રથમ ઋણ પદ હોય,તો $r$ ની કિંમત શોધો.

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