Car Talk Puzzler (Palindrome Mileage)

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 week, Tommy gets into his new car to drive to work. He fires up his […]

Car Talk Puzzler: Math + English =

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 this limerick include Nantucket or the band at the Waldorf Astoria? RAY: No! Here it is. […]

Car Talk Puzzler: In Search for Bogus Coins

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 like your average bathroom scale – but it’s accurate to within a tenth of a […]

Leaking Gasoline Puzzler

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 very moment the car begins to move at 45 mph, the gas tank begins to leak […]

Three Slips of Paper – Car Talk Puzzler

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 on each of three slips of paper. The slips are then placed face down on […]

Two Classic Puzzlers from Cartalk

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 took this two-digit number and you squared it, AB x AB, and when you did […]

Two Great Puzzlers from Cartalk

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 cents each. TOM: Let me get this straight. You have to spend exactly a hundred […]

My Favorite Podcasts of 2010

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 I do listen to numerous podcasts while on the daily walks with the dog and […]

Cartalk puzzler #2 logic – Rowena’s Picture

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. Her father, the evil King Raymond has devised a way to drive off suitors. He […]

Car Talk Puzzler (Dance Party)

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, Tom and Ray (aka Click and Clack), are very funny and their answers are pretty […]