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Tag Archives: number puzzles
Solution to Puzzle #176: Outsmart Your Teacher
This was a fun and relatively simpler puzzler, and I was bombarded with correct answers. People with correct answers included Mahi Saraf, Deepak Jayaraman, Rishikant Kumar, Abhinav Jain, Pratik Poddar and Shivanshu. I am taking the liberty of copying the … Continue reading
Solution to Puzzle #171: Buying Dimsums
Many puzzles sometimes give you a glimpse of some amazing brilliance that lies all around us – this was one such puzzle. While many of you gave the correct answer for the number (which is 11), and this included Abhinav … Continue reading
Puzzle #172: Divisibility by first 13 numbers
I acquired a new book recently (thanks to Suman Saraf) – Problem Solving Strategies in Mathematics. Here is a problem from that book. It is a simple problem for adults, so will request people to show it to their children. … Continue reading
Solution to Puzzle #167: 4 Rats in a Star
This was a relatively simple puzzle, and I received correct answers from Mahi Saraf, Pratik Poddar, “Mashex” and Prakhar. Well done all! The answer is 2178 (RATS) Here is the explanation: Since the product is four digits long, RATS can … Continue reading
Puzzle #166: Donut Sharing
This puzzle is a variation of a puzzle I had posted very early (amongst my first 10 posts). It is very simple, and intended for children. Thanks to Suman Saraf for contributing this one. Alice and Bob go into their … Continue reading
Puzzle #162: Who finished 2nd in 100m?
Very nice puzzle from the NSA collection. We have seen versions of this in the past, I loved this one as well. Three athletes (and only three athletes) participate in a series of track and field events. Points are awarded … Continue reading
Solution to Puzzle #154: Can You Divvy Up the Gold?
Apologies for not posting last week, I was traveling on a short break with family. This was a relatively simple problem for most people, and I received lots of correct answers. Correct answers came from Amit Mittal, Suman Saraf, Abhinav … Continue reading
Puzzle #108: The Double Square Number Problem
While browsing through mind cipher.com, I came across this wonderful puzzle…a good puzzle for those who love to play with numbers. It’s said that a number N with 4 digits is a double-square number when it equals the sum of … Continue reading
Puzzle #73: Find The Two Numbers
This is a beautiful puzzle that came to me through an IITD friend (Sirisha), and I had not done before – thank you Sirisha! There are two friends A and B. Their teacher calls them separately and tells A, the … Continue reading
Solution to Puzzle #61: How Many Pearls
Many of you came back with the correct answer this time – thanks. I got the first correct from Shreya Mantripragada (9 year old, Bay Area). Also got correct answer from Anubhav Garg who explained his answer really well, Shruti … Continue reading
Alok Goyal's Puzzles Page 