Make the smallest and the greatest numbers by using all of the following digits (only once):-

$9,3,8$

The procedure of forming the greatest number is:-

• The smallest digit is placed at one's place.
• And the greatest digit is placed at the highest place of the number.

Hence, the greatest number will be by using these digits as per the procedure = $983$

The procedure of forming the smallest number is:-

• The greatest digit is placed at one's place.
• The smallest digit is placed at the highest place of the number.

Hence, the smallest number will be by using these digits as per the procedure = $389$