Here's a puzzle from Martin Gardner's Mathematical Games column, which ran for many years in Scientific American. I found it in his anthology, My Best Mathematical and Logic Puzzles, which is only $(removed) on Amazon.
Imagine that you have three boxes, one containing two black marbles, one containing two white marbles, and the third, one black marble and one white marble. The boxes were labeled for their contents – BB, BW, WW – but someone switched the labels so that every box is now incorrectly labeled. You are allowed to take one marble at a time out of any box, without looking inside, and by this process of sampling you are to determine the contents of all three boxes. What is the smallest number of drawings needed to do this?
Magician David Kwong moonlights (er, daylights?) as a crossword puzzle creator for the New York Times. In the parlance of the craft, he is a “cruciverbalist,” one who is adept at making, or solving, crossword puzzles. (Wired)
Sometimes I blog about something and it goes nowhere, much like this girl’s domino: Sometimes I blog about something and it continues to weave its way to the many corners of the internet, much like this: But, sometimes I blog about something and it starts a chain reaction that looks more like this (I looked […]
Oh boy, I think I have a new hobby. I’ve just learned that you can combine puzzles, that have the same die cut, to make really awesome pieces of art. It had never occurred to me that manufacturers of mass-produced puzzles cut different puzzles of theirs in the same way, making the pieces interchangeable. It […]
For the true audio enthusiast, there’s a lot of difference between putting on some songs “for background music” and a true listening experience. For the latter, there’s nothing like a pair of sturdy headphones and the powerful speakers that come with them. And the wireless variety doesn’t get much more powerful than the TREBLAB Z2 […]
Digital or analog, there’s a path of least resistance for any project. Finding that path is what the Agile methodology is all about, which is why proficiency in it is a must for any project management position – and the paycheck that comes with it. And the quickest path to learning Agile? The Agile Project […]
Everybody’s flown a paper airplane. But what if you could fly on a paper airplane? Until we invent shrink-ray technology, the PowerUp X FPV Video Paper Airplane Kit will have to do – but it’s as fun as that sounds and more. The original version of this creative toy added drone tech to the old, […]