There are 9 students in a class. The teacher chooses 2 students to go to the library. The order in which they are chosen does not matter. How many ways are there to choose the students?A.72B.504C.36D.81

There are 7 seniors on student council. Two of them will be chosen to go to an all-district meeting. How many ways are there to choose the students who will go to the meeting?Decide if this is a permutation or a combination, and then find the number of ways to choose the students who go.A.Combination; number of ways = 21B.Permutation; number of ways = 42C.Permutation; number of ways = 21D.Combination; number of ways = 42

There are 9 students in the chess club. The club moderator selects 3 of them to go to a chess tournament. In how many ways can she choose 3 of the 9 students?A.126B.84C.36D.504

There are 11 students on the tennis team. The coach selects 3 of them to go to a tennis clinic. In how many ways can he choose 3 of the 11 students?A.990B.165C.330D.55SUBMITarrow_backPREVIOUS

There are 10 students on the basketball team. The coach selects 3 of them to go to a basketball clinic. In how many ways can she choose 3 of the 10 students?A.210B.45C.720D.120

There are 25 students in a class with 15 boys and 10 girls. The class teacher selects either a boy or a girl for monitor post of the class. In how many ways, the class teacher can make this selection?