Find the difference between the greatest and the least 5-digit number that can be written using the digits 6, 2, 7, 4, 3 each only once.
To write the smallest 5-digit number, the digits 6, 2, 7, 4, 3 needs to be written in ascending order. Hence, 23467 is the least 5-digit number. Thus, the difference between the two numbers is 52965.
