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In how many ways can the eight rooks be placed on an 8-by-8 chessboard so that no two rooks can attack one another?
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In how many ways can the eight rooks be placed on an 8-by-8 chessboard so that no two rooks can attack one another?

User Bisca
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You have a total of (8!)^2/8! and that gets you. 40,320
User Tryliom
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