જો $\log x : 3 = \log y : 4 = \log z : 5$ હોય,તો $zx =$

  • A
    $2y$
  • B
    $y^2$
  • C
    $8y$
  • D
    $4y$

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જો $\log _{10} 2 = 0.3010$ અને $\log _{10} 7 = 0.8451$ હોય,તો $\log _{10} 2.8$ ની કિંમત શોધો.

જો $\log _{x} y=100$ અને $\log _{2} x=10$ હોય,તો $y$ ની કિંમત કેટલી થાય?

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