Tag Archives: logic puzzles

Solution to Puzzle #54: True or False?

Posted on March 17, 2014 by Alok Goyal

This was a very simple puzzle, more of a quick teaser, and many people sent correct answers. First ones to send in were Anirudh Baddepudi, Amit Gupta, Anurag Khaitan and Rhea Mittal – well done! The correct answer is “Exactly … Continue reading →

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Puzzle #54: True or False?

Posted on March 8, 2014 by Alok Goyal

This is a cute puzzle I found today in a Martin Gardner book, while attending a Mathematical Circles class at Alok Mittal’s home. Very cute – only a 2 minute puzzle! Evaluate each of the 10 statements s to its … Continue reading →

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Puzzle #52: How Many People Partying?

Posted on February 14, 2014 by Alok Goyal

Thanks to Anirudh Baddepudi for contributing this puzzle. I also do not know the answer yet and hence looking forward to enjoying this one. At a party, seven people know seven others, and the remaining people each know 5 other … Continue reading →

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Solution to Puzzle #51: Color of the Cap

Posted on February 14, 2014 by Alok Goyal

This was a relatively simple puzzle and the response was again awesome – thanks everyone! The first one to come back with the correct answer was Radhika Goyal from NY. Also got correct answers from Vivek Sheel, Anirudh Baddepudi, Sirisha … Continue reading →

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Puzzle #51: Color of the Cap

Posted on February 8, 2014 by Alok Goyal

This is a very well known puzzle and there are many variations of this puzzle. I picked this one up from “Mathematical Circles” by Dmitri Fomin, Sergey Genkin and Ilia Itenberg, Chapter #8, Problem #8. Three people – A, B … Continue reading →

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Solution to Puzzle #50: Cat and Mouse Tale

Posted on February 8, 2014 by Alok Goyal

One of the best responses to any puzzle since I started last year – thanks a ton! Radhika Goyal was the first one to send an answer for this puzzle – well done! In addition to her, I got correct … Continue reading →

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Solution to Puzzle #46: A Fork in the Road

Posted on January 11, 2014 by Alok Goyal

Got a pretty enthusiastic response to this puzzle, and I am very happy to see that many people tried it with their children. First person to come back with a correct answer was Anirudh Baddepudi from Singapore. Well done Anirudh! … Continue reading →

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Puzzle #46: A Classic…Fork in the Road

Posted on January 4, 2014 by Alok Goyal

This is a classic puzzle, many of you have probably done it at some point in time. I was fortunate to have been introduced to this puzzle by none other than Prof. Edgar W. Dijkstra, who taught me a course … Continue reading →

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Solution to Puzzle #42: How Wide is the River

Posted on December 8, 2013 by Alok Goyal

Great response to this puzzle – thank you so much! I was surprised to see the activity in countries like Germany and Singapore this time, in addition to the activity I see in India and US – appreciate all the … Continue reading →

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Puzzle #42: How Wide is the River

Posted on November 30, 2013 by Alok Goyal

Seems like the puzzle collections from the Martin Gardner books is unlimited, and also of outstanding quality. While flipping through one of the books (Mathematical Puzzles and Diversions), I found another gem in Chapter 12. Some people have told me … Continue reading →

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