Question 5

Find the difference between the greatest and the smallest number that can be written using the digits 6, 2, 7, 4, 3 each being used only once.

$\begin{array}{cc}\text{Greatest five-digit number using digits 6,2,7,4,3}& =76432\\ \text{Smallest five-digit number using digits 6,2,7,4,3}& =-23467\\ \text{Difference}& =52965\end{array}$

Therefore the difference is 52965.