9. At a restaurant, you can choose 2 different side dishes from a list of 10. The number of possible side dish choices can be counted using: a. permutations
b. combinations

10 How many possible side dish choices do you have
in problem #9?

11. An entry code into a building is a 5-digit number. The number of different codes can be counted using
a. permutations
b. combinations

12. How many different codes are possible in
problem #11.

Pls help, thx a bunch