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In: Statistics and Probability

Permutations 1) In how many ways can 8 identical rooks be placed on an 8×8 chessboard...


Permutations

1) In how many ways can 8 identical rooks be placed on an 8×8 chessboard so that none can capture any other, namely no row and no column contains more than one rook?

2) In how many ways can three couples be seated in a row so that each couple sits together (namely next to each other): a) Row b) In a circle

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