Tag Archives: Pigeon Hole Principle Puzzles

Puzzle #191: 1×4 Rectangular Stone Plates

This is a gem of a puzzle from A Moscow Math Circle, Week by Week Problem Sets by Sergey Dorichenko. Can a 10×10 square be paved with 1×4 rectangular stone plates? As always, please send your answers as comments within … Continue reading

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Solution to Puzzle #186: 4×4 Grid

This was a simple puzzle, a classical application of the pigeon hole principle. I got correct answers from Deepak Goyal (my brother in NY), Mahi Saraf (as always) and Pratik Poddar (as always again). I am taking the liberty of … Continue reading

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Solution to Puzzle #110: Circular Dining Table

This was a relatively easy puzzle and many people sent a correct answer. That included Siddhartha Goel, Suman Saraf, Pratik Poddar, Traveling Salesman (which I believe is a nick name), Narsimha Pai and Salil Panikkaveettil. The puzzle used a popular … Continue reading

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Solution to Puzzle #86: Add The Digits and Count

This was a difficult puzzle, and I got only one response and a correct one from Ganesh Ramani, my friend from IITD Comp Science and now in Tokyo – well done! To arrive at the solution, lets begin with Variation … Continue reading

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