Learning Target C1 Core: I can use the additive and multiplicative principles and the Principle of Inclusion and Exclusion to formulate and solve counting problems. 1. The specialized Wichita Flag official state license plate has the format A123 where A represents a capital alphabet letter followed by three numbers. Zeros are allowed (my plate is F063, for example). How many different license plates are possible? 2. In an informal survey of students, 32 have dogs, 45 have cats, and 15 have both. How many people have only a pet cat?