Leone is making license plates composed of 2 letters followed by 3 digits.

a. How many plates can he make if we assume no repetition of letters or numbers?

_____ _____ _____ _____ _____ = _________________

b. How many plates can he make if the first letter cannot be Z , the first digit cannot be 1 (one), the

second digit cannot be 3 (three) and repetition of letters and numbers is not allowed?

_____ _____ _____ _____ _____ = _________________

c. How many plates can he make if the first letter must be X, the second cannot be Y or K, the

number must be divisible by 5 and repetition of letters or digits is allowed?

_____ _____ _____ _____ _____ = ___________________