In: Statistics and Probability
You eat five days per week at the same restaurant, and every day you order a sandwich and a drink. There are 26 sandwiches including 6 vegetarian options, and 15 drinks including 4 caffeine-free drinks. On Tuesdays, you like to eat healthy, so you always choose a vegetarian sandwich and a caffeine free drink on Tuesdays. The other days you can eat any sandwich and drink any drink - but you never repeat a sandwich or a drink in the same 5-day week. How many different 5-day meal plans fit your rules?