How many ways can you choose three frozen yogurt toppings from 20
Assuming that the order of the toppings does not matter, the answer is:
20 Choose 3 = 20! / (3! * 17!) = (20 * 19 * 18) / (3 * 2 * 1) = 1140.
Therefore, there are 1,140 ways to choose three frozen yogurt toppings from 20.