જો $\log _{30} 3=a$ અને $\log _{30} 5=b$ હોય,તો $\log _{30} 8$ ની કિંમત શોધો.

  • A
    $3(1-a-b)$
  • B
    $a-b+1$
  • C
    $1-a-b$
  • D
    $3(a-b+1)$

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જો $\log _{10} 50+\log _{10} 20=x$ હોય,તો $x$ ની કિંમત કેટલી થાય?

જો $x=\log _{a} b c, y=\log _{b} c a, z=\log _{c} a b,$ હોય,તો

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$x>0$ માટે,જો $y=\frac{10^{\log _{10} x}}{x^{2}}$ અને $x=y^{a}$ હોય,તો $a=$

જો $\frac{\log x}{l+m-2n} = \frac{\log y}{m+n-2l} = \frac{\log z}{n+l-2m}$ હોય,તો $x^2 y^2 z^2$ ની કિંમત શોધો.

જો $\frac{\log x}{a^{2}+a b+b^{2}}=\frac{\log y}{b^{2}+b c+c^{2}}=\frac{\log z}{c^{2}+c a+a^{2}}$ હોય,તો $x^{a-b} \cdot y^{b-c} \cdot z^{c-a}=$

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