Assuming whole numbers and a leading zero does not count: 10,234,567
987654321
10234567
4321
There are twelve possible solutions using the rule you stated.
The smallest possible 9 digit number (assuming negatives are not allowed) is 102,345,678 in which 5 is in the thousands' place.
987654321
10234567
4321
9,876,543
There are twelve possible solutions using the rule you stated.
The smallest possible 9 digit number (assuming negatives are not allowed) is 102,345,678 in which 5 is in the thousands' place.
The largest 5-digit number without repeating digits is 98765. This number uses the highest available digits in descending order, ensuring that no digit is repeated. The digits 9, 8, 7, 6, and 5 are all unique and form the highest possible 5-digit combination.
98765432
It is 98765.
9876543
123,456,789
9876543