Just write an odd digit in the one's position, and repeat that digit in the ten's position.
How about: 66/6 = 11
what is the greets possible 9 digit number that uses each of the digits 1-3 times
DHL and aramex.
1133,
Octal.
987
990
87543001
Bank of America uses a nine digit number for their bank accounts. Each person has their own account and has different numbers.
222335
7532
67 and 8 are factors of 536