Monthly Archives: October 2013

Puzzle #37: Four 9’s and 100

This one is a relatively easy one and something that can be attempted by folks of all age groups. I picked it up on the internet from the following site: http://www.puzzles2puzzleu.com/ You have four 9’s and you may use any of … Continue reading

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Solution to Puzzle #36: Professor on the Escalator

This one turned out to be a little difficult for children who do not know algebra, and hence I did not get correct answer from any of the younger kids. Congratulations to Ruchir Godura and Varun Gupta for being the … Continue reading

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Puzzle #36: Professor on the Escalator

This is a very tantalizing puzzle from one of the Martin Gardner books “More Mathematical Puzzles and Diversions” (Chapter 14, Puzzle #4). When Professor Stanislaw Slapenarski, the Polish mathematician, walked very slowly down the down-moving escalator, he reached the bottom after taking 50 steps. As … Continue reading

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Solution to Puzzle #35: Staying Alive in a Desert

I got a lot of responses to this puzzle, one of the highest responses I have had ever. Also, most of the answers were correct, and had a similar theme. The answer does not necessarily require a video, and hence … Continue reading

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Puzzle #35: Staying Alive in a Desert

I saw this puzzle at the recently organized TiE Conference in Delhi – so thanks to Priya who posted this puzzle. Here it goes: You are a traveler in a desert full of mosquitoes. You know that if you get … Continue reading

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Solution to Puzzle #34: Another Set of Magic Squares

I received only two correct answers, from Tishyaa Chaudhry and Smiti Mittal – both brilliant kids – well done! While brute force can help you arrive at the answer, the fun is in finding a method. The complete answer is … Continue reading

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Puzzle #34: Another Set of Magic Squares

I found this very nice set of number puzzles on the net on the following site – http://www.mathsphere.co.uk. The puzzle looks pretty innocuous, and by sheer brute and force, you can try to solve it, though it is not very … Continue reading

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