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प्रश्न
Solve for x: `("log"81)/("log"9)` = x
उत्तर
`("log"81)/("log"9)` = x
⇒ `("log"3^4)/("log"3^2)` = x
⇒ `(4"log"3)/(2"log"3)` = x
⇒ x = 2.
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