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There are 18 chairs numbered from 1 through 18 around a circular table. How many ways can three people be seated, so that no two people are adjacent?

 

Could i use this formula nCr?

 Jan 22, 2020
edited by Guest  Jan 22, 2020
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The number of ways is 18*17*16 - C(20,2) = 4706.  cool

 Jan 23, 2020

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