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(31A) Logarithms in base a

Evaluate.

$5^4$

Evaluate.

$\log _{4}1=$

Evaluate. Give your answers as fractions.

$3^{-3}$

Evaluate.

$\log _{6}1=$

Evaluate. Give your answers as fractions.

$25^{-\frac{1}{2}}$

Evaluate. Give your answers as fractions.

$\log_{49}\frac{1}{7}$