Question

Find the difference between the greatest number and the smallest number formed using the digits 5, 3, 4, and 0 without repetition of digits.
$\left[5\right]$

Answer 1

If the given digits are arranged in the descending order, we get the greatest number.
$\left[1\right]$
So, greatest 4-digit number formed using the given digits = 5430
$\left[1\right]$
If the given digits are arranged in the ascending order, we get the smallest number.
$\left[1\right]$
Here, 0 is the smallest number. So, 0345 = 345 will be the smallest possible number.
$\left[1\right]$

The difference between them
= 5430 - 345
= 5,085
$\left[1\right]$