12346
1023
From left to right, pick the smallest possible digit every time. This will give you the smallest possible number.
What is the least possible 6 digit odd number with only using 1 to 9 once
smallest=1234 greatest=4321
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.
5
5
1111
With repetition, the smallest is 22222 and the largest is 88888 Without repetition, the smallest is 23458 and the largest is 85432
19
1111
01489
Since there are only five different digits, a 6-digit number can only be generated if a digit can be repeated. If digits can be repeated, the smallest 6-digit number is 111111.
1023
0.12369
It is -987654. The smallest POSITIVE number is 102345.
From left to right, pick the smallest possible digit every time. This will give you the smallest possible number.