You’re shown random numbers one at a time, and you must guess how each next number will compare to the previous one: Will it be higher or lower? How do your chances of prediction evolve?| thefiddler.substack.com
A casino offers vouchers for an even-money game. What’s the most you can earn in guaranteed winnings? What’s the most you have at least a 50-50 chance of winning?| thefiddler.substack.com
You’d like to share an embrace. You just don’t want to be caught on camera.| thefiddler.substack.com
Place a unit square in a larger square region. If you do this cleverly, how large a region can you have such that you can’t add any more unit squares? What if you initially place three unit squares?| thefiddler.substack.com
What’s the fewest pins needed to break 100? And if two players knock over the same number of pins, what’s their greatest possible difference in score?| thefiddler.substack.com
The following problem is from the Fiddler (the “spiritual successor to FiveThirtyEight’s The Riddler column”), involving the game of tenpin bowling with traditional scoring: If yo…| Possibly Wrong