contestada

Five toppings for a pizza are available at Polina's Pizza. How many combinations of two different toppings are possible?

Respuesta :

KailynM
I think the answer is....20 combinations.
Athenalsun

Solution:

There are 5 options for the first topping and 4 options left for the second topping for a preliminary count of 5x4=20 options. However, the order in which we put the toppings on doesn't matter, so we've counted each combination twice, which means our final answer is 5x4/2 = 10 combinations.

KailynM, you were really close!!!