A couple years ago, when my kids were in elementary school, I coached their school’s “Sink or Float” team for the Science Olympiad. The objective of the Sink or Float competition was straightforward: Students must demonstrate their ability to determine which objects will sink…
Yesterday, I presented two of my favorite probability puzzlers: the Monty Hall Problem and the Two Boys Riddle. If you didn’t see those, you might want to read yesterday’s post before reading the solutions below. None of my millions of…
For more than two decades, the Monty Hall problem stood as my favorite probability riddle. But recently, the Two Boys riddle has replaced Monty Hall as my favorite. Both are excellent riddles that exploit the same underlying weakness in the…