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Monthly Archives: December 2013
Puzzle #45: Prime Numbers
Beautiful puzzle I got today, attributed to my niece, Radhika. Got this puzzle from her Maths Olympiad book for Grade 7. Puzzle is solvable by all kids in grade 4 and above. Here is the question – Arrange numbers 1 … Continue reading
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Solution to Puzzle #44: Thinking Outside the Box
Response to this puzzle was the best we have had in the last 3 months – so thanks a ton…particularly want to thank all the friends from UK, Singapore and Greece who came in large numbers this time! The first … Continue reading
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Puzzle #44: Thinking Outside the Box
This is a nice cute puzzle with a “small” trick – I took this from the book “The Moscow Puzzles” by Boris A. Kordemsky (Puzzle #175). In the diagram, 3 matches are connected with balls of plastic to make an … Continue reading
Solution to Puzzle #43: The Triangular Duel
This is the best response to a puzzle in recent times – thanks everyone! This was a slightly difficult question, the first correct answer for the first part came from Girish Tutakne again. Only one fully correct answer came from … Continue reading
Puzzle #43: The Triangle Duel
Yet another wonderful puzzle from the Martin Gardner collection. This one is from “More Mathematical Puzzles and Diversions”, Chapter 5, Puzzle #9. This one involves probability, and hence difficult for children who do not understand probability at all. Three men, … Continue reading
Solution to Puzzle #42: How Wide is the River
Great response to this puzzle – thank you so much! I was surprised to see the activity in countries like Germany and Singapore this time, in addition to the activity I see in India and US – appreciate all the … Continue reading
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