You want to drive a little over the speed limit. The person in front of you wants to go exactly the speed limit. This is going to be a long day.Riddle #9 made the long day much more enjoyable. Here is the riddle quoted from FiveThirtyEight: There is a very long, straight highway with some number … Continue reading Random Permutations of Cars in Traffic
Let's face it, I'm an addict of these riddles. This week's riddle from Ollie at FiveThirtyEight is a longer one:You’re on the north shore of a river, and want to cross to the south, via a series of 13 bridges and six islands, which you can see in the diagram below. But, as you approach … Continue reading Can I Cross? Let Me Flip a Coin.
This riddle hit the internet as I was leaving on my 6th Annual Michigan Beer Tour. Being the minimalist that I am, I wasn't about to bring my laptop and type up anything on the road. However, that didn't stop me from thinking about it. Here is the riddle for this week quoted for convenience:A basketball … Continue reading A Neurotic Free Throw Shooter
I can shave off 1.67 since I was wrong the first time. Let's be a little more rigorous in defining the optimal strategy. The optimal strategy is the one that will end with the least amount over the fair price on average. There are 5!=120 different possible arrangements of the cards, each of which is … Continue reading The Sadistic Car Salesman, Part 2
This has some people stumped. I'm a little hesitant to put this out there because it may not be optimal yet, but I'm somewhat confident. Here is the riddle quoted from FiveThirtyEight: You go to buy a specific car, whose fair price we’ll call N. You have absolutely no idea what N is and the dealer, sadistic capitalist that … Continue reading The Sadistic Car Salesman