If I create a 10 digit password with the following requirements:
- At least one uppercase letter A-Z - 26
- At least one lowercase letter a-z - 26
- At least one digits 0-9 - 10
- At least one common symbol (#,$,%,etc) - 32
By inclusion-exclusion, I can calculate I have ~ 3.2333E+19 possible combinations
However, if I change one of the requirements to at least TWO digits 0-9, how can I calculate the possible combinations?