Tag Archives: logic puzzles

Puzzle #127: Building and Eggs Again

Posted on January 10, 2016 by Alok Goyal

This is a wonderful puzzle shared by a good friend Alok Aggarwal, who lives in California and are a family of math wizards (which includes him as well!). This puzzle is a variation of puzzle #94  (https://alokgoyal1971.com/2015/03/01/puzzle-94-two-eggs-and-a-building/), where with two … Continue reading →

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Solution to Puzzle #123: Heavier or Lighter Weight

Posted on December 26, 2015 by Alok Goyal

Apologies for not being able to send the answer last weekend. I got many correct answers for this one, and people sent different correct answers. Ones who sent correct answers include Pratik Poddar, Akash Tayal, Sandeep Singhal, Parag Dhanuka, Prakhar … Continue reading →

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Solution to Puzzle #122: Sparrows on Trees

Posted on December 13, 2015 by Alok Goyal

Wonderful puzzle and I got many correct answers. Ones to send the answers were Pratik Poddar, Prakhar Prakash, Suman Saraf, Karan Sharma and Girish Tutakne. The answer is that it can’t be done for 6 but can be done for … Continue reading →

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Puzzle #123: Heavier or Lighter Weight

Posted on December 6, 2015 by Alok Goyal

Found this intriguing question in the book Mathematical Circles (Russian Experience) by Dmitri Fomin, Sergey Genkin and Ilia Itenberg. I have not done this before, and do not know, therefore, how easy or difficult this is. There are 101 coins, and only … Continue reading →

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Puzzle #122: Sparrows on Trees

Posted on November 28, 2015 by Alok Goyal

This is a very cute puzzle borrowed from the book Mathematical Circles (Russian Experience) by Dmitri Fomin, Sergey Genkin and Ilia Itenberg. It is a wonderful book for middle graders. There are six sparrows sitting on six trees, one sparrow … Continue reading →

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Solution To Puzzle #120: The Efficient Electrician

Posted on November 28, 2015 by Alok Goyal

Apologies for a long absence, was traveling abroad on the last two weekends and hence could not post. This was a difficult puzzle, and I received answers from only 3 people – Pratik Poddar, Rahul Rane and Suman Saraf. Well … Continue reading →

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Puzzle #120: The Efficient Electrician

Posted on November 1, 2015 by Alok Goyal

This is a gem of a puzzle – read it this morning in the book Mathematical Puzzles and Diversions by Martin Gardner. I have had many of the Martin Gardner books for ages now, but overtime I open these books, … Continue reading →

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Puzzle #118: Rotating Disk

Posted on October 11, 2015 by Alok Goyal

Taking another puzzle from Alok Mittal’s class – another beautiful puzzle! Look at the graphic below. While the graphic contains the entire puzzle, am repeating it here: Six players – call them A, B, C, D, E and F – … Continue reading →

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Solution to Puzzle #115: The First Rabbit

Posted on October 6, 2015 by Alok Goyal

Thanks for an overwhelming response again to the rabbit puzzle. Anyone who responded, did so with the correct answer! Some people did not send any explanation, amongst those who did, I like the simplicity of the answer from Prakhar, Salil … Continue reading →

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Puzzle #115: The First Rabbit

Posted on September 21, 2015 by Alok Goyal

This is a puzzle I got recently from my daughter, Anisha, who in turn got this puzzle from Alok Mittal’s Mathematical Circles Class. There is an island on which a rabbit arrives. Rabbit reproduces, as part of which it gives … Continue reading →

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