Posts Tagged ‘ integer set ’

Le Monde puzzle [#783]

July 20, 2012
By
Le Monde puzzle [#783]

In a political party, there are as many cells as there are members and each member belongs to at least one cell. Each cell has five members and an arbitrary pair of cells only shares one member. How many members are there in this political party? Back to the mathematical puzzles of Le Monde (science

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