Question #2
A local restaurant advertises 3-topping pizzas at a discount price. With 6 toppings to choose from, how
many 3-topping pizzas can be made if all the toppings are different? Note: Pepperoni (P), Cheese (C),
and Sausage (S) is the same as CSP or SPC

Respuesta :

Answer: 20

Step-by-step explanation:

If you can't have two toppings that are the same, you have a combination with 6 choose 3, which equals 6! / 3! (6-3)! = 20