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CBSE Class 11-science Answered


In how many ways can 9 persons sit around a table so that all shall not have the same neighbours in any two arrangements?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Persons can sit at a round table in  ways. But in clockwise and anti-clockwise arrangement, every person will have the same neighbours.
So, the required numbers of ways are
Answered by | 04 Jun, 2014, 03:23: PM
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