May11-10, 08:11 AM
1. The problem statement, all variables and given/known data
There is a total of 19 students sitting in a semi-cirlce. How many seating arrangements are possible, if 4 of the 19 students have to sit next to each other?
3. The attempt at a solution
I'm not sure if the calculation is:
15! x 4!
19! / 4!
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