1. Maddy is making a frozen yogurt treat and has 15 different topping to choose from. She is only going to pick 3 toppings at a time. Find the number of different frozen yogurts she can make.
2. Naman and Kelsey are going to Fiori's for some pizza. They have 9 different toppings to pick from. They only have enough money to put 2 different toppings on. How many different pizzas can they make?
3. BRGR has a special on kid-sized burgers in the month of May. Shane, Aaron and Daniel are going there after school. They offer 20 different toppings and you are allowed to pick 4 toppings for free. How many different burgers can they make?
4. Walter is taking a group of girls to the movies. Nine girls from Team 2 want to sit beside Walter at the movie. If only two girls get to sit beside Walter, how many different combinations of girls are possible?