Question

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.

Answer 1

Greatest number$=76432$ [Write in descending order of the numbers]
Smallest number$=23467$ [Write in ascending order of the numbers]
Difference $=76432-23467$
$76432$
$-23467$
___________
$52965$
___________
Therefore, the difference between the greatest and the least number that can be written using the digits $6,2,7,4,3$ each only once is $52,965$.