Monthly Archives: February 2016

Puzzle #132: Boys, Girls and Pennies

This is a very nice puzzle borrowed from Alok Mittal’s Mathematical Circles class. Five boys and five girls found five pennies. It was decided to arrange the group in circle, and count out individuals at fixed intervals, giving them a … Continue reading

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Solution to Puzzle #130: The Plato Riddle

Thanks again to Sirisha for this wonderful puzzle. As I mentioned this was more of a teaser, and a play with words more than math. I only got two correct answers – One from Girish Tutakne and another from Vikas … Continue reading

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Puzzle #131: The Pyramid Problem

This is a beautiful geometry puzzle contributed by my nephew, Karan Sharma. The puzzle originally appeared in a PSAT exam in 1980, and was not really a “puzzle” until one student proved that there was a different answer than what … Continue reading

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Solution to Puzzle #129: The Einstein’s Puzzle

I got many answers for this puzzle, I think the title attracted quite a few people. First person to send the correct answer was Radhika Goyal, just ahead of her dad (Deepak Goyal), who was 10 minutes behind her. Others … Continue reading

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Puzzle #130: The Plato Riddle

I am on a roll here with the old-time biggies, after Einstein we have Plato now! This is a beautiful puzzle and riddle contributed by Sirisha Gadepalli, an IIT Campus friend – thank you Sirisha! Here it goes: Aristotle was … Continue reading

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Solution to Puzzle #128: The Milkman Again

Apologies for not posting last weekend, I was traveling, and am likely to be traveling quite a bit in the next month, so there will be some irregularity in posting. This was a relatively simple one, lots of people sent … Continue reading

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