permuatation/combination problem?

Question

How do you do this type of problem?

Five singers are to perfrom at a tanelt show. One insists on being the last performer. If that is so, how many different ways are you able to schedule the appearances?

What is this? How do you solve it?

*perform at a talent

Answer 1

It's simply a matter of arranging the other/first four singers.

All permutations of the four are acceptable, so the answer is just 4!=24.