Mathematics · Permutations and Combinations
In how many ways can you place N coins on a board with N rows and N columns such that every row and every column contains exactly one coin?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1N
- 2N (N − 1)(N − 2) … 2 × 1✓
- 3N2
- 4NN
Correct answer
N (N − 1)(N − 2) … 2 × 1
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