Question

A sub sandwich shop offers 22 toppings to choose from. How many ways could a person choose a 4-topping sandwich?

26
88
7,315
175,500

Answer 1

C - 7315

Explanation:

Using the combination formula.

22! / (4!(22-4)!) = 7315

Combination is like saying I want meat-cheese-lettuce-tomato and this is the same as cheese-meat-tomato-lettuce. (same toppings, different order)