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January 24th, 2017, 11:30 PM   #1
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arrangement of persons in a circle such that 3 are not consecutive

Number of ways of arranging $n$ persons in a circle such that

exactly three persons are not consecutive,is
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January 24th, 2017, 11:43 PM   #2
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what does 3 persons are not consecutive mean?
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January 25th, 2017, 12:35 AM   #3
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Sorry romsek actually it is
Quote:
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Number of ways of arranging $4$ persons out of total

$n$ persons in a circle such that exactly three persons are not consecutive,is
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January 25th, 2017, 07:41 AM   #4
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The issue is with the word "consecutive." What does it mean?
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