01489
The smallest four-digit number not using zero is 1000. In a four-digit number, the first digit cannot be zero, so the smallest possible value for the first digit is 1. The remaining three digits can be any number from 0-9, so the smallest possible four-digit number is 1000.
1111
0.12369
It is -987654. The smallest POSITIVE number is 102345.
123478
The smallest four-digit number not using zero is 1000. In a four-digit number, the first digit cannot be zero, so the smallest possible value for the first digit is 1. The remaining three digits can be any number from 0-9, so the smallest possible four-digit number is 1000.
1111
19
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.
12346
11112
123478
1,023.