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 $3.76 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?
NUTCASE is a deceptively simple cast metal puzzle by legendary puzzlemaker Hanayama. If you’re not planning to try it yourself, here’s how to solve it.
Ugears makes gorgeous wooden puzzle toys made from laser-cut plywood that snap-fits to create beautiful, retro machines and sculptures with meshing, working geared mechanisms.
Russian speed-cuber Evgeny Bondarenko decided to tackle the biggest challenge on the market today: solving the 17x17x17 Rubik’s Cube. Talk about concentration!
We’ve all used Excel at some point in our careers, but chances are most of us have only scratched the surface of what this ubiquitous program can do. From automating simple tasks to presenting data through beautiful charts and PivotTables, Excel brings a ton of utility to the table that can make a huge impact […]
Traveling isn’t always the most comfortable experience, but at least you have your music to keep you company on those long flights. That is, until your chatty neighbor and that crying baby three seats over drown out your playlist. These Paww WaveSound 3 Noise-Cancelling Bluetooth Headphones block up to 20 decibels of audio, so you can […]
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