Monthly Archives: April 2015

Puzzle #100: The 100 square rug puzzle (Prize Puzzle)!

Never imagined when I started 2 years back that I will be posting 100 puzzles at some time…thanks to all readers for continuous engagement and encouragement! Here goes the 100th one…will reveal the original source when I post the answer. … Continue reading

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Solution to Puzzle #99: World’s Most Famous Puzzle Currently

This was a relatively simple puzzle and I received many correct solutions to this puzzle. Ritesh, one of my colleagues, was the first one to respond in literally 30 seconds. Many others gave correct answers that include – Utkarsh (another … Continue reading

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Puzzle #99: World’s Most Famous Puzzle Currently!

I am simply amazed how one single puzzle has proliferated across the social media in the last 10 days – the puzzle from Singapore, popularized by Alex Bellos’ blog in The Guardian. Many of you would have seen this, but … Continue reading

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Solution to Puzzle #98: How Many Days to be Disease Free

Thanks again to Pallav for the puzzle – as I mentioned earlier, one of my favorites and a wonderful concept of mathematical induction to be taught to children. Only two people sent correct answers – Mohit Khare and Pratik Poddar … Continue reading

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Puzzle #98: How Many Days to be Disease Free

Thanks to Pallav for yet another very interesting, and in this case, a classic puzzle. My 11th grade chemistry teacher, Mr. Gopinath, had given it to me, and I love this puzzle. Here it goes: In a village of 100 … Continue reading

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Solution to Puzzle #97: Pirates and Gold Coins – Part II

I did not get as many correct answers to this puzzle as I had expected. Many people gave an answer which can work, but only Karan Sharma, my nephew, gave me a full answer. Other people to give any correct … Continue reading

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Puzzle #97: Pirates and Gold Coins – Part II

I had posted a puzzle earlier (Puzzle #3) – https://alokgoyal1971.com/2013/02/10/puzzle-3-five-pirates-and-looted-gold-coins/. This puzzle is an extension of the same puzzle, and also attributed to the same family – this time to Alok Mittal from his Mathematical Circles group. Original puzzles goes as … Continue reading

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