Recent Comments
Prakhar on Puzzle #190: Escalator Ra… Pratik Poddar on Puzzle #189: Blue Eyed Si… Praneeth on Puzzle #189: Blue Eyed Si… Prakhar on Puzzle #187: Sum as 100 Prakhar on Puzzle #187: Sum as 100
Monthly Archives: December 2014
Puzzle #87: The Magic Triangle (Challenge Puzzle!)
Hope you all had a great year and may 2015 be a less puzzling year than 2014! Ending the year with a difficult puzzle, to which I do not know the solution. This is a challenge puzzle, i.e., the first … Continue reading
Solution to Puzzle #86: Add The Digits and Count
This was a difficult puzzle, and I got only one response and a correct one from Ganesh Ramani, my friend from IITD Comp Science and now in Tokyo – well done! To arrive at the solution, lets begin with Variation … Continue reading
Posted in Solution
Tagged Alok Goyal, combinatorial puzzles, Numbers puzzles, Pigeon Hole Principle Puzzles
1 Comment
Puzzle #86: Add The Digits And Count
I found this beautiful puzzle on Brilliant.org very recently. A very different kind of puzzle, requires basic knowledge of combinatorics. I have also created a couple of simpler versions so that children can also attempt it. Original Problem: How many integers … Continue reading
Solution to Puzzle #85: Colliding Ants
This was a difficult puzzle overall, and only two people sent correct answers – Aman Singla and Girish Tutakne. I think in the end this was a bit difficult for children! I am reproducing the answer from Aman, Girish had … Continue reading
Puzzle #85: Colliding Ants
Very nice puzzle from gurmeet.net/puzzles, which has a great set of puzzles on the site. I am taking a puzzle from this site after a long time. This puzzle should be interesting for children as well as adults. Peter and … Continue reading
Solution to Puzzle #84: Reason Without Equations
Many people sent correct answers, which I had expected. However, very few sent the explanation behind the answers, which is what I was looking for. Some of you used equations to solve the question. Intent was to solve the questions … Continue reading
