http://www.regexpal.com/

1)
[1-9]{1,2}/[1-9]{1,2}/([0-9]{4}|[0-9]{2})

2)
[A-Z][a-zA-Z]*,[a-z]+ [0-9]+(\/.)*(\.|\?)
Marinica,abc 9/d.
M,a 9.
3)\[\^?(([^\[\]]*)|(\[\\?[^\]]*\]))\]

sau: \[\^?.*\*\]