Probability Puzzles with Obsolete Coins

I love math puzzles, and Henry Ernest Dudeney is the foremost puzzlemeister of all time. Whenever I need a diversion from the pressing day-to-day busyness of life, I like to crack open one of his books. And get humbled. He stumps me as often as not, but I enjoy the challenge. Today, I’ve got two Continue reading Probability Puzzles with Obsolete Coins