(adsbygoogle = window.adsbygoogle || []).push({}); 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!

or

19! / 4!

Thanks!

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# Short Probability (permutation) question

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