11111 or even smaller (if accepted) 00000
How about 10000
The smallest four digit number is 1000. It is even so 1001 is the smallest four digit number that is odd.
12346
4579 is the smallest even number he can make
0
10234 If you're cheap, you can go 01234
The smallest four digit number is 1000. It is even so 1001 is the smallest four digit number that is odd.
100012
12346
4579 is the smallest even number he can make
00000 or 00001
0
10234 If you're cheap, you can go 01234
1000
19
1243
-7510 is the smallest.
From left to right, pick the smallest possible digit every time. This will give you the smallest possible number.