none
The smallest 4-digit number without any repeated digits is 1023, as it starts with the smallest possible digit (1) followed by the next smallest digits (0, 2, 3). The largest 4-digit number without any repeated digits is 9876, which uses the largest digits available in descending order.
1023456789
5
The smallest four-digit number in which no digit is repeated is 1023. It starts with the smallest digit (1) to ensure it's a four-digit number, followed by the next smallest digits (0, 2, and 3) without any repetitions.
102
The smallest 4-digit number without any repeated digits is 1023, as it starts with the smallest possible digit (1) followed by the next smallest digits (0, 2, 3). The largest 4-digit number without any repeated digits is 9876, which uses the largest digits available in descending order.
1023456789
10234567
5
5
0123456789
10234567
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.
5
102
100,000,000,000
103