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Tag Archives: Alok Goyal
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
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
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
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
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
My favorite number – 1729
For those of you who are number buffs, I am assuming you know this already, but if not, I thought you might enjoy this. This was told to my brother and I as a story when my father told us … Continue reading
Puzzle #5: Crossing the bridge
There are 4 people, lets call them Ramesh, Mahesh, Suresh and Jitesh. They are on a trek and it is already dark. They need to cross a bridge to reach a rest house on the other side. The bridge is … Continue reading
Solution to Puzzle #4: Summing to 15
This was probably a more difficult problem that what I had anticipated this to be. I got much fewer responses for this compared the previous ones. This puzzle combined two different concepts – Magic Square using numbers 1-9 and the … Continue reading
Puzzle #4: Summing to 15
This is a puzzle I discovered very recently, and really enjoyed it. Here it goes: There are 9 cards lying face up, with numbers 1-9 written on them. Ramesh and Mahesh start playing a game – they start picking up … Continue reading
Solution to Puzzle #3: Pirates and Looted Coins
Many people sent me the correct answers for this puzzle. Many people correctly pointed out that depending on how you interpret the behavior of the pirates, the answer could be different, and I must confess that the directions I gave … Continue reading
Alok Goyal's Puzzles Page 