a) There are 30 students. How many ways are there to form a team of 6 students?
b) John, joe, and Ben are three out of thirty students. how many teams can be formed so that all three of them are on the team
c) how many teams can be formed so that none of those three students are on the team
d) how many teams can be formed so that no more than two of those three students are on the team?
#are my answers right? (combinatorics)
silk basin
My answers:
a) 30C6
b) 27C3
c) 27C6
d) 30C6-27C3