Nuns in their Cells
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Classic Problem
There are $8$ nuns, one in each cell, making a total of $3$ nuns along each side of the courtyard:
How can they be arranged so there are $4$ nuns along each side?
Solution
Sources
- c. 1500: Fra Luca Pacioli: De Viribus Quantitatis
- 1992: David Wells: Curious and Interesting Puzzles ... (previous) ... (next): The Nuns in their Cells: $95$