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(31A) Logarithms in base a

Evaluate.

$4^2$

Evaluate.

$\log _{3}243=$

Evaluate. Give your answers as fractions.

$7^0$

Evaluate.

$\log _{8}\frac{1}{64}=$

Evaluate. Give your answers as fractions.

$32^{\frac{1}{5}}$

Evaluate. Give your answers as fractions.

$\log_{125}5$