Problema Solution
Exactly 5 actors try out for the 5 parts in a movie. If each actor can perform any one part and no one will perform more than one part, how many different assignments of actors are possible?
Answer provided by our tutors
the first actor can chose any of the 5 parts
the second can chose any of the left 4 parts
the third actor can chose any of the 3 left parts
and so on
the last actor has one 1 part to chose thus
the number or different assignments is:
5*4*3*2*1 = 120.