Tag Archives: puzzles

Solution to Puzzle #23: Yet Another Magic Square

Posted on July 21, 2013 by Alok Goyal

….and the winner once again is….Ruchir Godura – He happened to be the only one this time to give a correct answer! Thanks to everyone who tried the puzzle. Here is a link to the video to explain the answer … Continue reading →

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Puzzle #22: Cutting the Cube

Posted on July 6, 2013 by Alok Goyal

This is a puzzle picked up from one of Martin Gardner collections. Might be just a touch difficult for kids, but worth trying. A carpenter, working with a buzz saw, wishes to cut a wooden cube, three inches on a … Continue reading →

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Solution to Puzzle #20: The Monty Hall Problem

Posted on June 15, 2013 by Alok Goyal

This is a very tantalizing puzzle. At the outset it is very difficult to see why the odds should be different than 50-50. Thanks to everyone who responded, and there were many who did. The answer goes as follows: Contestants … Continue reading →

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Solution to Puzzle #19: Find the Average Salary

Posted on June 9, 2013 by Alok Goyal

This puzzle generated more responses than any of the other puzzles I have sent to date – thanks for the overwhelming response. What was more heartening was the creativity of the different solutions I received. In the solution, therefore, I … Continue reading →

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Solution to Puzzle #18: Who Will Win The Game

Posted on June 2, 2013 by Alok Goyal

I got two correct answers for the puzzle – no surprise that Tishyaa was one of them, and I also got an answer from Alok Kuchlous immediately after I posted the puzzle – thanks! The answer was relatively simple – … Continue reading →

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Puzzle #18: Who will win the game?

Posted on May 26, 2013 by Alok Goyal

Here is a two player game – there are three piles of stones: one with 10 stones, one with 15 stones, and one with 20 stones. At each turn, a player can choose one of the piles and divide it … Continue reading →

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Solution to Puzzle #17: Perfect Square with 0’s, 1’s and 2’s

Posted on May 26, 2013 by Alok Goyal

Surprisingly I did not get any correct answers to the puzzle. The solution to the puzzle lies in divisibility rules – any number with 100 0’s, 1’s and 2’s will be divisible by 3 since the digits add up to … Continue reading →

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Puzzle #15: The Early Commuter

Posted on May 5, 2013 by Alok Goyal

A commuter is in the habit of arriving at his suburban station each evening at exactly five o’clock.  His wife always meets the train and drives him home.  One day he takes an earlier train and arrives at his station … Continue reading →

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Solution to Puzzle #14: Measuring Time

Posted on May 5, 2013 by Alok Goyal

I got a lot of correct answers for this puzzle, and very happy to see this. Since the puzzle does not require any graphic for explaining the solution, I will just put the answer in text this time. Answer for the second … Continue reading →

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Puzzle #13: Mutilated Chessboard and Dominoes

Posted on April 21, 2013 by Alok Goyal

This is a famous puzzle that I have come across in many different puzzle books. I have taken this from one of Martin Gardner’s books – The Best Mathematical and Logic Puzzles (Puzzle #3). The props for this puzzle are … Continue reading →

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