When going trick-or-treating, Calvin's bag got filled with sweets. In his generosity, he decides to give 6 sweets to Hobbes: a peanut-butter cup, a chocolate bar, a lollipop, a chewing gum, a candy corn and a gummy bear. Hobbes decides to eat three of these immediately and to save the other half for tomorrow. How many possibilities does he have to choose the first three sweets to eat, when order matters.