Question

If ${\log }_{3}81=x$, then $x$ is equal to_____

• A. $2$
• B. $3$
• C. $4$
• D. $5$

Answer 1

Answer: (C)

$4$

${\log }_{3}81=x$

$\Rightarrow {\log }_3{3}^4=x$

$\Rightarrow 4{\log }_{3}3=x$

$\Rightarrow x=4$

Hence, C is the correct option.