Papa Your Mommas Pizza Parlor has 6 meat toppings and 7vegetable toppings from which to select. The parlor has threedifferent sizes of pizza (individual, large, and giant) and twodifferent types of crust (deep-dish and thin).

(a) How many different two-topping pizzas could be ordered?

(b) How many different two-topping pizzas could be ordered with exactly one meat topping and exactly one vegetable topping?

(c) How many different four-topping vegetarian pizzas could be ordered?

The answers are

a) 468

b) 252

c) 210