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Question
Find the quotient when the difference of 985 and 958 is divided by 9.
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Solution
\[\text{ If } \overline{ abc }- \overline{acb} \text{ is divided by }9, \text{ the quotient is} (b - c).\]
\[ \therefore\text{ If }(985 - 958) \text{ is divided by 9, quotient }= (8 - 5) = 3\]
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