The local Kia auto dealership intends to prominently display two of Kia’s fve new car models in its show-room. One of the models chosen will be put in the showroom window, the other will be positioned next to the front entrance.
a. How many display possibilities are there?
b. Suppose you are only interested in counting the number of model pairs that could be chosen for display, ignoring the fact that there are two different display locations inside the showroom. How many different possibilities are there?