Mathematics, 12.08.2021 21:20 Aurionna101

12 identical coins are placed in the cells on a chess board with 4 rows and 4 columns. If coins are not allowed to be placed in the same cell, how many ways are there so that there are 3 coins in every rows
and columns?

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12 identical coins are placed in the cells on a chess board with 4 rows and 4 columns. If coins are...