# Tag Archives: solution

## Solution to Puzzle #11: The 10-digit number

I got the most number of correct answers for this puzzle. I was particularly impressed by Ameya Kulkarni (from London), Salil Kuchlous (from Bangalore) and Tishya Chaudhry and Anisha Sharma Goyal (both Gurgaon) – all kids who solved the puzzle. … Continue reading

## Solution to Puzzle #10: Who is taller

I thought that this was a relatively simple problem – Most people gave me the correct answer, but I did not receive the correct proof for the answer from anyone. The answer is – the shortest of the tallest in … Continue reading

## 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

## 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

## 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

## 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

## 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