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Math Help - Circular Combinations

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    Circular Combinations

    Determine the number of circular permutations of {0,1,2,..,9} in which 0 and 9 are not opposite. (Hint: count those in which 0 and 9 are opposite.)
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    Quote Originally Posted by lacy1104 View Post
    Determine the number of circular permutations of {0,1,2,..,9} in which 0 and 9 are not opposite. (Hint: count those in which 0 and 9 are opposite.)
    There are 8! circular permutations of {0,1,2,..,9} in which 0 and 9 are opposite.
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