A pizza place is having a special: 10 medium pizzas for $50.They only allow you to choose one of their 6 different specialtypizzas though, with no substitutions. You and 6 friends are havinga get-together (so 7 people altogether), and you decide to orderpizza for the group. Each person gets to choose one type of pizza,and then you are responsible for choosing the remaining 3. Once all7 people have chosen their pizza, how many total ways are there foryou to complete the order?