SOLUTION: 1. In how many ways can five persons line up for a bus if two people refuse to follow each other?

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Question 303161: 1. In how many ways can five persons line up for a bus if two people refuse to follow each other?
Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
5P2 = 5!/(5 - 2)!
Can you do it now?