Is choosing 2 toppings from a list of 8 for your pizza permutation or combination?

Choosing 2 toppings from a list of 8 is a combination.

A permutation is a selection of items where the order of the items matters. For example, if you are choosing 2 toppings from a list of 8, the order in which you choose the toppings matters. The combination (pepperoni, sausage) is different from the combination (sausage, pepperoni).

A combination is a selection of items where the order of the items does not matter. For example, if you are choosing 2 toppings from a list of 8, the order in which you choose the toppings does not matter. The combination (pepperoni, sausage) is the same as the combination (sausage, pepperoni).