Question

There are 5 performers who will present their comedy acts this weekend at a comedy club. one of the performers insists on being the last​ stand-up comic of the evening. if this​ performer's request is​ granted, how many different ways are there to schedule the​ appearances

Answer 1

1,2,3,4,5\
1,2,4,3,5\\
1,3,2,4,5\\\6×4=24
1,3,4,2,5///
1,4,2,3,5//
1,4,3,2,5/

or you can do

4×3×2×1=24