Question 348171
As there are 9 people and only 4 chair, we firstly select 4 people from 9 to seat in  chair.


no. of ways to select 4 people = 9C4 

now, we can arrange these 4 people on chair by 4! ways.


total no. of ways = 9C4 * 4!
                  
                  = 3024

answer is 3024 ways



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