Given that $$\(a< b< c\)$$ the four whole numbers $$\(a, a, b\)$$ and $$\(c\)$$ have a mode of 7 a median of 8.5 a mean of 9 Work out the value of $$\(a\)$$, the value of $$\(b\)$$ and the value of $$\(c\)$$. $$\[ \begin{aligned} & a=. \\ & b=. \\ & c=. \end{aligned} \]$$

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