Use the digits to make the greatest and smallest four digit numbers.
Step 1 : For writing the greatest four digit number by using the digits :
In order to write the greatest four digit number by using the digits arrange the digits in descending order.
So, the greatest four digit number by using the digits
Step 2 : For writing the smallest four digit number by using the digits :
In order to write the smallest four digit number by using the digits , arrange the digits in ascending order.
So, the smallest four digit number by using the digits
Hence, the greatest and smallest four digit numbers by using the digits are and respectively.