Monthly Archives: March 2013

Puzzle #10: Who is Taller?

This is a relatively simple puzzle after a rather difficult one, I would encourage people to try this one with kids. In a rectangular array of people, who will be taller – the tallest of the shortest person in each … Continue reading

Posted in Puzzles | Tagged , , | Leave a comment

Solution to Puzzle #9 – Sailors, Monkey and Coconuts

Before I give the solution, I owe it everyone to reveal the original source, which appeared in Scientific American. Here is the exact source: Martin Gardner, Mathematical Games, Scientific American, April 1958. Martin Gardner, The Second Scientific American Book of … Continue reading

Posted in Puzzles | Tagged , , , | Leave a comment

Puzzle #9: Sailors, Monkey and Coconuts

Thanks to Vikas Vats for contributing this puzzle, and was originally given to us by our class teacher in Class XI, Ravi Gopinath. This is an interesting one, though could be tough for children below 12 years of age. Five … Continue reading

Posted in Puzzles | Tagged , | 2 Comments

Solution to Puzzle #8: Maximizing the Odds

This one was a relatively simple puzzle, though not really for children below 12 years as they are not as familiar with the probability concept. I am not posting a video solution to this as there is not much value … Continue reading

Posted in Puzzles | Tagged , , , | Leave a comment

Puzzle #8: Maximizing the Odds

Here is a cute problem given to me by a friend, who mentioned that this was part of the Martin Gardner collection. There are two identical urns, and there are 50 identical red balls and 50 identical white balls. All … Continue reading

Posted in Puzzles | Tagged , , | Leave a comment

Solution to Puzzle #7: Faulty Ball Continued

I need to begin with an apology – I have not been able to create a video solution to this puzzle as I seem to have misplaced the writing instrument for my iPad. Hence a written solution to this one, … Continue reading

Posted in Puzzles | Tagged , , , | Leave a comment

Puzzle #7: Faulty Balls Continued…

Lets take a slightly different version of the faulty balls – You have multiple machines producing table tennis balls. Each ball is supposed to weigh 10 grams. One of the machines is faulty and is producing balls of either 9 … Continue reading

Posted in Puzzles | Tagged , , | Leave a comment

Solution to Puzzle #6: Identifying the Faulty Ball

I was very happy to see many new “puzzle solvers” for this puzzle. I was particularly impressed with Aadi Kuchlous and Sahil Kuchlous who solved the 6 and the 9 balls puzzle respectively. Same is true for Arushi and Anisha … Continue reading

Posted in Puzzles | Tagged , , | Leave a comment

Puzzle #6: Identifying the faulty ball

There are many puzzles many of you would have come across which provide you a balance and ask you to identify a ball from a set of balls that is of a different weight than the rest of them. Many … Continue reading

Posted in Puzzles | Tagged , | Leave a comment

Solution to Puzzle #5: Crossing the Bridge

I did not get as many responses for this puzzle – I think people probably found it to be too easy. I was hoping that the kids would enjoy the puzzle. The answer is 17 minutes – check out the … Continue reading

Posted in Puzzles | Tagged , , , | Leave a comment