જો $8 = 3 + \frac{1}{4}(3 + p) + \frac{1}{4^2}(3 + 2p) + \frac{1}{4^3}(3 + 3p) + \dots \infty$ હોય,તો $p$ ની કિંમત શોધો.

  • A
    $9$
  • B
    $5$
  • C
    $6$
  • D
    $3$

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જો $(10)^9 + 2(11)^1(10)^8 + 3(11)^2(10)^7 + \dots + 10(11)^9 = k(10)^9$ હોય,તો $k$ ની કિંમત શોધો.

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