# Sufficiently Distinct?

Logic Level 1

$\LARGE{ \require{enclose} \begin{array}{rll} \phantom{0}\ \boxed{\phantom{0}} && \\[-2pt] \boxed{{9}}\ \enclose{longdiv}{\boxed{\phantom{0}} \ \boxed{8}}\kern-.2ex \\[-2pt] \underline{\boxed{\phantom{0}} \ \boxed{7}} && \\[-2pt] \boxed{\phantom{0}} \end{array} }$

The above shows an incomplete long division. Which of the following digits was not used in this division?

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