Tag Archives: Geometry puzzles

Solution to Puzzle #181: Hidden Cross

Posted on June 4, 2017 by Alok Goyal

This was a simple puzzle, but I did not get as many solutions as I would have expected. Both Suman Saraf and Pratik Poddar sent the right answers, along with three people at home – Karan Sharma (my nephew) and … Continue reading →

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Solution to Puzzle #178: Minarets of Samarra

Posted on May 14, 2017 by Alok Goyal

This was a beautiful geometry arrangement puzzle, and I received correct answers from three people – Vishal Poddar, Mahi Saraf and Suman Saraf – well done all! Am reproducing the answers from all of them, please notice the patters of … Continue reading →

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Puzzle #178: Minarets of Samarra

Posted on April 30, 2017 by Alok Goyal

This is a wonderful puzzle contributed by Alok Mittal, through his Maths Circles class. There is one great minaret in Samarra, but what if the Caliph decided to build twelve? Since the Caliph loves regular geometry, he decides to build … Continue reading →

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Solution to Puzzle #173: Dividing a Circle into 7 Parts

Posted on April 9, 2017 by Alok Goyal

This was a beautiful puzzle and amongst my favourite geometry puzzles. Unfortunately I did not get a perfect answer from anyone, even though I did receive an answer from Abhinav Jain and Pratik Poddar. I am taking the liberty of … Continue reading →

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Puzzle #173:Diving a Circle Into 7 parts

Posted on March 5, 2017 by Alok Goyal

This is yet another wonderful puzzle sent by Suman Saraf. Thanks Suman! Given a circle and it’s diameter, how can you partition it’s area into seven equal regions without using straight lines. As always, please send your answers as comments … Continue reading →

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Solution to Puzzle #170: Rectangle and the Oil Well

Posted on February 26, 2017 by Alok Goyal

I got many correct answers, thanks to all who responded. This was a “simple” application of pythogoras theorem. I got correct answers from Abhinav Jain, Pratik Poddar, Karan, Praneeth Ruthala, Suman Saraf and Mahi Saraf. While everyone sent me only … Continue reading →

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Solution to Puzzle #169: Division of a Cake

Posted on February 19, 2017 by Alok Goyal

This puzzle was not as easy as it looked…many people sent solution, but only Suman Saraf and his daughter Mahi sent the correct ones. To copy a line I really liked from Suman’s solution – The essence of fair or envy … Continue reading →

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Puzzle #170: Rectangle and the Oil Well

Posted on February 12, 2017 by Alok Goyal

This is a wonderful puzzle that I saw today after a long time. I was asked this puzzle in an interview in Microsoft back in 1994 March – yes it has been a long time! I saw it today in … Continue reading →

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Puzzle #169: Division of a Cake

Posted on February 5, 2017 by Alok Goyal

This is a very old puzzle. I remember this puzzle being asked by my Chemistry teacher in Class XI – Dr. Ravi Gopinath, someone was has had a strong influence in my passion for puzzles. I got reminded of this … Continue reading →

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Solution to Puzzle #159: Winning Strategy With Coins

Posted on November 20, 2016 by Alok Goyal

This was indeed a beautiful puzzle, thanks again Prateek! Apologies that I could not post anything last weekend, I was traveling. I got correct answers from Suman Saraf, Pratik Poddar and Shruti Mittal – well done all. Reproducing the answer … Continue reading →

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