Question: a) b) We have an empty 4x4 grid. We then place 4 apples at random in different squares of the grid. What is the probability

We have an empty 4x4 grid. We then place 4 apples at random in different squares of the grid. What is the probability that none of the apples are in the same row or column as another apple? (Answer should be in reduced fraction form "x/y")

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