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Minimum number of locks and keys…

Math Olympiad, I.S.I. Entrance and College Mathematics Forums Math Olympiad Minimum number of locks and keys…

last updated by  swastik pramanik 2 months ago
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    swastik pramanik
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    Six Scientists are working of a secret project. They wish to lock up the documents the documents in a cabinet so that the cabinet can be opened when and only when three or more of the scientists are present. What is the smallest number of locks needed? What is the smallest number of keys each scientist must carry?

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