New Math Puzzler up this week: Tommy’s Drive to Work RAY: Tommy has a new car, it’s 19 years old. … It has one of those newfangled six-digit odometers. It can register as many as 999,999 miles. So one fine morning last … Continue reading
Car Talk has a new math puzzler up that mixes math and science: There Was an Old Man…RAY: I’m going to recite an equation and, from that, you are going to give me a limerick that consists of five lines. TOM: Does … Continue reading
In Search of the Bogus Coins RAY: We have seven stacks of coins, each with 100 coins. Real coins weigh ten grams, and phony coins weigh 11 grams. We’re going to weigh the coins on an analytic scale, which works just … Continue reading
The Last Gasp of the Fiat “A car travels at a steady speed of 45 mph. Its fuel consumption is 30 miles to the gallon. It has a 15-gallon gas tank, which was full when the car started off. But at the … Continue reading
Excellent probability (ish) puzzler from Car Talk: Three Slips of Paper RAY: This is from Norm Leyden from Franktown, Colorado. The date on it is 1974–I’m a little behind. Three different numbers are chosen at random, and one is written … Continue reading
Puzzler 1: Every two-digit number can be represented as AB, where B is the ones digit and A is the tens digit. Right? So for example the number 43, A is 4 and B is 3. Imagine then that you … Continue reading
1. Cats, Dogs and Mice – Oh My! RAY: You’re given a hundred dollars and told to spend it all purchasing exactly a hundred animals at the pet store. Dogs cost $15. Cats cost a buck, and mice are 25 … Continue reading
After some of my favorite bloggers wrote posts talking about their favorite books of 2010, here and here, I’ve decided to do the same but with a twist. I don’t end up reading more than 5 books a year, but … Continue reading
Here’s a great puzzler for logic. Princess Rowena Evil King Raymond and the White Knight RAY: This puzzler comes from the days of knights and kings and fair maidens. Once upon a time, the fair maiden Rowena wished to wed. … Continue reading
I don’t know if you listen to Car Talk, but maybe you should give it a try. Its a weekly radio show on NPR and podcasts are available. Essentially it is a call-in show for car questions and the hosts, … Continue reading