Thanks in advance for the assistance!
1) Farmer John has 9 prize winning cows. How many ways can he choose 3 of his cows to show at the state fair?
Is it as simple as "9 C 3", 9 choose 3, on the caculator?
2) If 3 people need to serve as chaperones on a shool trip, how many ways can they be chosen from the parents of 20 students? (Assume 2 parents per student)
Is this as simple as "40 C 3"?