1.
Using the digits 1, 2, 3, 4 without repetition, the greatest 4-digit number that can be made is
2.
Using the digits 1, 5, 7, 2 without repetition, the greatest 4-digit number that can be made is
3.
Using the digits 3, 5, 7, 0 without repetition the greatest 4-digit number that can be made is
4.
The smallest 4-digit number that can be made using the digits 1,8,5,3 without repetition is
5.
The smallest 4-digit number that can be made using the digits 5,3,6,4 without repetition is