Probability and the Counting Principle

“A sandwich shop offers 3 types of bread, 4 types of meat, and 2 types of cheese. If a customer chooses one of each, how many different sandwich combinations are possible? If each combination is equally likely, what is the probability that a customer randomly selects a sandwich with rye bread, turkey, and swiss cheese? A code consists of 2 letters followed by 1 digit. The letters can be any letter of the alphabet, and the digit can be any number from 0-9. How many different codes are possible? If all codes are equally likely, what is the probability that a randomly generated code is "AB7"?”