Question

A pizza parlor offers a choice of 16 different toppings. How many 6-topping pizzas are possible?

Answer 1

120 is the answer. Good Luck

Answer 2

actually the answer is 16! - 10!, or 5,765,760
you have 16 choices for topping 1, then assuming you don't choose the same topping more than once you 15 for the second, etc
16*15*14*13*12*11