Answer
$\log_{17}17=1.$
Work Step by Step
$\log_{b}x=y $ is equivalent to $ b^{y}=x $
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$\log_{17}17=y \quad $ is equivalent to $ \quad 17^{y}=17$.
Now, since $17^{1}=17,$ it follows that $ y=1$
and $\quad \log_{17}17=1.$
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