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Category Archives: Puzzles
Puzzle #129: The Einstein’s Puzzle
I am sure the title will catch everyone’s attention. It is a very cute puzzle that Einstein invented as a child. The puzzle is also attributed to Lewis Carroll. There are many versions of this puzzle, the one here is … Continue reading
Puzzle #128: The Milkman Again
Almost 3 years back, I had posted a milkman puzzle, which was the second puzzle I posted (https://alokgoyal1971.com/2013/02/10/solution-to-puzzle-2-milkman-puzzle/). Here again is a modified version of the same puzzle. A very interesting puzzle that Alok Mittal gave to his Mathematical Circles … Continue reading
Puzzle #127: Building and Eggs Again
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
Puzzle #126: The Tricky Square Root
Here is another nice puzzle I saw on brilliant.org The figure states it all…Happy rooting!
Puzzle #125: Test Your Creativity
Here is a wonderful small teaser I got from the site brilliant.org. I have seen at least two solutions to this puzzle, so try your creativity, there might be more. Look at the equation 1 4 … Continue reading
Puzzle #124: Add the Numbers
This is a gem of a puzzle that my nephew, Karan, gave to me yesterday. He and I came up with different ways to come to the answers, and there are probably many more ways. For all the possible 5 … Continue reading
Puzzle #123: Heavier or Lighter Weight
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
Puzzle #122: Sparrows on Trees
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
Puzzle #121: Spider and The Fly
This is a puzzle whose variations many people would have done already. Yet, I found this to be very nice and not as simple as it may seem at first sight. I picked this from a Martin Garder book again … Continue reading
Puzzle #120: The Efficient Electrician
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
Alok Goyal's Puzzles Page 