To find how many license plates we need to notice that the license has 3 letters and 3 digits, then we need to multiply in each of this spaces the number os possibilities (remeber that they cannot be replace) then:
[tex]26\cdot25\cdot24\cdot10\cdot9\cdot8=11,232,000[/tex]Therefore we can create 11.232,000 of license plates.