Question
If the best and the worst paper never appear together, then six examination papers can be arranged in how many ways
Answers
GPT 3.5
If the best and the worst paper never appear together,
then we can treat them as one unit and arrange them with the other four papers.
This can be done in $(6-1)!=\boxed{120}$ ways.
then we can treat them as one unit and arrange them with the other four papers.
This can be done in $(6-1)!=\boxed{120}$ ways.