Im having trouble undertsnaidng this unit, can you help me solve this and show your work? i don't get it

1. A bag contains 8 red balls, 4 blue balls, and 6 green balls. If you randomly select 3 balls from the bag without replacement, what is the probability of selecting exactly 2 red balls and 1 blue ball?

2. In a survey conducted among 50 people, 30 people preferred pizza, 15 people preferred burgers, and 5 people preferred tacos. If you randomly select 3 people from this group, what is the probability distribution of the number of people who prefer pizza?