Question

Mackenzie's ice cream shop lets customers choose 2 toppings from the list below to add to their ice cream:

There are 6 different toppings

How many groups of 2 different toppings can go on an order of ice cream?

Answer 1

15

Explanation:

6 different toppings

lets say they are

a b c d e f

you can have

a.b,a.c,a.d,a.e,a.f,b.c,b.d,b.e,b.f,c.d,c.e,c.f,d.e,d.f,e.f ad them up which is 15