Help with question 5 & 6 please

Question Completion Status: 5. (7 pts) A bag contains five colored balls (red, white, yellow, blue, and green). Two balls are selected at random. a. Determine the number of sample points in the sample space. b. List all the sample points in the sample space. {Use tree diagram} c. Determine the probability of selecting at least one red ball. 6. (8 pts) A lottery consists of selecting 7 numbers from 1-72. Order of selection does not matter. What is the probability of exactly matching 5 numbers