How many teams of 3 players can be chosen from 8 players?

15 points ! ~ see if you know the answer to both you!

Find the nonpermissible replacement for binthis expression. b2/5b +5

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?