Question

Emma’s pizza shop has 21 different toppings, three kinds of sauce, and three kinds of
cheese. Assume that someone can order any combination of sauces and cheeses
(including none), but must order exactly two different toppings.
10.1. How many different pizzas can one create? Explain.
10.2. If three people are sharing a pizza, and each can order their third as in 10.1, then
how many different pizzas can they order? Explain carefully.

Answer 1

Answer:

189 combinations for 10.1

Idk about 10.2 bro