A cable of 80 meters is hanging from the top of two poles that are both 50 meters off the ground. What is the distance between the two poles (to one decimal point) if the center cable is (a) 20 meters off the ground and (b) 10 meters off the ground?
Presh Talwalker of Mind Your Decisions says the above riddle was used as an Amazon interview question. His video has the answer.
There are times when I get tired of all of the major sites and apps that make up a lot of the seen Internet. Sadly, I was born too late to experience the wonder of Geocities and intricate handmade websites run by just a single person. But, on some evenings, I still search for those […]
Here’s a puzzle from Martin Gardner’s Mathematical Games column, which ran for many years in Scientific American. I found it in his low-priced Dover edition anthology, My Best Mathematical and Logic Puzzles. Imagine that you have three boxes, one containing two black marbles, one containing two white marbles, and the third, one black marble and […]
Simon Anthony is cohost of a sudoku YouTube channel called Cracking the Cryptic. In this video he solves a difficult sudoku puzzle with extra constraints. It’s really fun to watch him solve it and get more excited as his sense of wonder grows (“This is like the universe is singing to us,” he says as […]
Allergies are brutal, affecting about 30 percent of all American adults. While many only saddle sufferers with mild irritations like coughing, sneezing, a runny nose or watering eyes, some symptoms can be even more intrusive and significantly more painful. Sinus pressure is one of those unholy side effects, causing a pain that can stretch from […]
“I probably use my chef’s knives more than any other tool in the kitchen.” – Bobby Flay, celebrity chef Cooking at home has taken on a whole new life in the wake of COVID-19, and even with restaurants slowly reopening across the US, there’s heavy reason to suspect that more of us preparing more meals […]
More than half of you think the best way to manage your passwords is to just keep ‘em safely stashed away in your own noggin. Meanwhile, there are also bunches of you that favor saving passwords in your browser, putting them in a spreadsheet or just writing them down on a piece of paper or […]