wendy needs to select three different pizza toppings out of twelve available toppings. the number of three different three-item pizzas she can choose is
She can make 4 different pizzas with having different toppings. But if they can be the same toppings for different pizzas then she has 36 varieties for her toppings on her pizza
There are three pizzas, and each has different toppings. There are twelve toppings available, so if you divide twelve toppings by three pizzas, you get four.
