pizza: A pizza place has 33 toppings on the menu. How many different combinations of toppings does a customer have available? Order doesn't matter (a pizza with sausage and mushrooms is the same as a pizza with mushrooms and sausage) and no repetitions (can't have extra pepperoni). Keep in mind, you can have anything from 33 different one-topping pizzas to only one 33-topping pizza.|||2^n whr n = number of toppings = 33 If the 33 toppings were elements in a set, you can use the formula 2^n to see how many subsets are possible. According to this 8,589,934,592 pizzas are possibe. But this includes a pizza without a single topping as well. So u can subtract one, if the pizzas definitely have to come with a topping.