A roll of ribbon was 12 m long do you cook nine pieces of ribbon that was 0.4 m each to tie some presents he then use the remaining ribbon to make some weeks each rate required 0.6 m for each question explain your reasoning

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?