210
The first digit can by selectd in one of two ways, since a number starting with zero would not be a 5-digit number. After that, each of the other four digits can be selected in 3 ways. So the number of 5-digit numbers is 2*34 = 162
5040 numbers can be made.
59
6*7*7 = 294
210
If the numbers are not repeated then the highest 5 digit even number to be made out of 0123456789 is : 98764.
The first digit can by selectd in one of two ways, since a number starting with zero would not be a 5-digit number. After that, each of the other four digits can be selected in 3 ways. So the number of 5-digit numbers is 2*34 = 162
5040 numbers can be made.
120 5-digit numbers can be made with the numbers 12345.
In decimal, a digit is one of the ten symbols that represent the numbers 0 to 9. A number can be made up of one or more digits. For example: 1 is a digit (as well as a number of course). 11 is a number made up of 2 digits.
59
6*7*7 = 294
6
9
It is difficult to interpret exactly what you are trying to ask. If you allow your five digit number to have leading zeroes and do not allow negative numbers, then 00000 - 99999 = -99999 is the smallest number. If you do allow negative 5 digit numbers, then (-99999) - 99999 = -199998 is the smallest number.
874321 is the largest number made from all these digits.