Posts
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Two Missing Numbers: Finding What’s Gone
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Two Glass Balls and the 100-Story Drop
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The Party Problem: Ramsey’s Theorem in Action
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Sock Drawer Puzzle: Matching by the Pigeonhole Principle
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Single Weighing: Find the Counterfeit Bag
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Handshake Puzzle: No Unique Counts Allowed
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Counterfeit Coins II: Weigh Once, Learn All
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Clock Pieces Puzzle: Equal Arcs Around the Dial
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Ants on a Square: Pigeonholes Under Glass
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Wise Men and the Glass: A Coordinated Countdown to Freedom
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Two Doors, Two Guards: One Question to Decide
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Trailing Zeros in 100!: Factorial Fun
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The Last Ball Puzzle: An Invariant Insight
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Secure Salary Averaging: Private Numbers, Public Mean
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Secure Message in a Box: The Double-Lock Solution