(2 mark) A group of 10 friends are planning to a trip. You are responsible for the flight tickets. You searched on the Internet and you found a flight with four different classes. Economy class (100$) has only four available seat, First class (150$) has only 2 available seats, Business class (200$) has only 3 available seats, and Premium class (300$) has 5 available seats. Your budget is limited and you want to save as much as you can. In how many ways you book the tickets?​