The idea is to start from the left, and use the smallest digit possible in each case. For instance, the smallest option for the first digit is 2, the smallest option for the second digit is 0, etc.
222335
21123
2
what is the greets possible 9 digit number that uses each of the digits 1-3 times
26.
222335
21123
200992
The smallest six-digit even number is 100,000
2
Eighteen
what is the greets possible 9 digit number that uses each of the digits 1-3 times
26.
It is 10000000.
45
27
21