You are ordering a hamburger and can get up to 7 toppings, but each topping can only be used once. You tell the cashier to surprise you with the toppings you get. What is the probability that you get 2 toppings

Probability, P (getting 2 toppings) = 0.1984

Step-by-step explanation:

Probability, P (1 toppings) = 1/7

Probability P of getting a particular topping is q = 1 - P = 1 - 1/7 = 6/7

Probability of (getting 2 toppings) = 7! / (2!5!) (1/7) ^2 * (6/7) ^5

P (getting 2 toopings) = (5040/240) * (0.020) * (0.4627)

P (getting 2 toppings) = 21 * 0.00948 = 0.1984