Answer:
35
Step-by-step explanation:
Given that a fast food restaurant has the following options for toppings on their hamburgers: mustard, ketchup, mayo, onions, pickles, lettuce, and tomato.
A customer can choose from these 7 options 4 different options in 7C4 ways
This is because order does not matter here
So we use combinations here
Total no of ways a customer choose four different toppings from these
options=7C4
=35
Answer is 35
