Monthly Archives: August 2017

Puzzle #193: Smallville Telephones

This is a relatively simple puzzle from Mathematical Circles by Dmitri Fomin, Sergey Genkin and Ilia Itenberg. Please do share this with your children, they should enjoy this. In Smallville, there are 15 telephones. Can they be connected by wires … Continue reading

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Solution to Puzzle #191: 1×4 Rectangular Stone Plates

This was one of my favorite puzzles, though slightly difficult. Unfortunately I got only one correct answer this time, from Suman Saraf. Well done Suman! The answer is “no”. Look at the unusual coloring of the 10×10 board above. Please … Continue reading

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Puzzle #192: Too Many 6’s

This is another beautiful puzzle from A Moscow Math Circle, Week by Week Problem Sets by Sergey Dorichenko. The puzzle will require some manipulation of numbers, but is very solvable and you will be happy that you did it once … Continue reading

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Solution to Puzzle #190: Escalator Race

This was a tricky puzzle – I received two correct answers, one from Prakhar and another one from Suman Saraf. Thank you both! Answer is that they will reach at the same time, provided certain conditions are met, see the … Continue reading

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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 #189: Blue Eyed Sisters

This was a simple puzzle, and I got correct solutions from Praneeth, Prartik Poddar and Suman Saraf. Well done all. I am borrowing the answer from Suman. For this, the most likely answer is 3 blue eyed out of 4 … Continue reading

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Puzzle #190: Escalator Race

I cannot stop loving the book A Moscow Math Circle – Week by week problem sets by Sergey Dorinchenko. So here is another one from this great collection. Anisha and Arushi are riding down an escalator. Halfway down the escalator, … Continue reading

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