Nayani is creating a multiple choice quiz for PSYB07. She has a test bank with 8 questions to choose from and has to pick 6 for the quiz. She wants to make as many versions as possible. To Nayani, the same questions in a different order are not considered a different version.

a. How many possible versions can she make for the students?

b. You and your friend are discussing the quiz after it's completed. What is the probability that you both had version 1?

c. What is the probability that you or your friend have version 1?