Aisha is picking out some movies to rent, and she is primarily interested in children's movies and comedies. She has narrowed down her selections to 15 children's movies and 11 comedies. How many different combinations of 3 movies can she rent if she wants at least one comedy?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?