Question 17
Each of the 10 letters $A$, $B$, $C$, $D$, $E$, $F$, $G$, $H$, $I$ and $J$ in the addition below represents a different digit.
$$\begin{array}{r}AB\\CD\\EF\\+\ G\\\hline HIJ\end{array}$$
What is the largest possible value of the three-digit number $\overline{HIJ}$?
$$\begin{array}{r}AB\\CD\\EF\\+\ G\\\hline HIJ\end{array}$$
What is the largest possible value of the three-digit number $\overline{HIJ}$?