Stephen does not like yogurt very much, but he loves
apples. Since both make a good snack, Stephen’s mom
makes a deal with Stephen. She will keep the refrigerator
stocked with 5 yogurts, 2 green apples, and 3 red apples
every day. Each day, Stephen will randomly pick a
snack. Use a tree diagram or area model to show all the
possible outcomes in the sample space. What is the
probability Stephen will not get three yogurts on three
consecutive days?