Question
Nine actors audition for four different parts in a play.
In how many ways can the play director fill these roles?
A) 368,880
B) 15,120
C) 3024
D) 126
In how many ways can the play director fill these roles?
A) 368,880
B) 15,120
C) 3024
D) 126
Answers
Reiny
What is your choice and why ?
Christina
C
9P4 = C
There are 9 slots, in which 4 parts can be placed in. Order also matters for each part/role. Therefore, 9P4
9P4 = C
There are 9 slots, in which 4 parts can be placed in. Order also matters for each part/role. Therefore, 9P4