Mind Your Decisions

Monday Puzzle: The Staircase Paradox (Video)

Once again, this week’s Monday Puzzle is in video form. I hope you’ll enjoy it and find it worth sharing. Is The Pythagorean Theorem Wrong? The Staircase Paradox I know which…

- 2 weeks, 21 hours, 46 minutes ago

How to reliably get updates if you “liked” my Facebook page

First of all, I want thank everyone who has liked my Facebook page which has about 1,400 likes. A small site like mine depends on social sharing and I really appreciate the support.…

- 2 weeks, 2 days, 21 hours, 42 minutes ago

New Video – Movie Math: The Water Jug Riddle From Die Hard With A Vengeance (1995)

How can you measure exactly 4 gallons from jugs that can hold 3 and 5 gallons? This puzzler was part of the movie Die Hard With a Vengeance. Watch the video for the solution. (I have also…

- 2 weeks, 3 days, 22 hours, 18 minutes ago

New Video – Multiply Any Number By 11 In Your Head

Since November is the 11th month, and 11/11 is coming up, I thought it appropriate to make a video about the number 11. In just three minutes you can learn how to multiply whole numbers by…

- 2 weeks, 4 days, 20 hours, 47 minutes ago

New Video – The Monty Hall Problem Explained

I have posted a new video about one of the most famous problems in probability that I think you’ll enjoy. The Monty Hall Problem – Why Switching Is Better You can read about…

- 2 weeks, 5 days, 18 hours, 5 minutes ago

The Swing Voter’s Curse: Why we might not vote, even when we care about who wins

image by Daniel Lobo. CC BY 2.0 Logically, it would stand to reason everyone should care about voting. After all, the rules we live by are made by politicians, and the politicians in charge…

- 2 weeks, 6 days, 22 hours, 24 minutes ago

Monday Puzzle: Pairs of Red and Black Cards [Video]

This week’s puzzle is presented in a video. Math Puzzle – Red and Black Cards Here is the text summary. Shuffle a deck of cards, and take the top 2 cards. If the 2 cards are…

- 3 weeks, 21 hours, 55 minutes ago

Game Theory In The News (Oct 2014)

This is the current installment of the monthly series “Game Theory in the News.” My hope is to highlight stories that can be used as case studies in the classroom, both so…

- 3 weeks, 4 days, 22 hours, 24 minutes ago

What Does The Normal Curve Sound Like? Popcorn! [Video]

I have posted a new video that I think you’ll enjoy. The video demonstrates that every time you make popcorn, you are listening to a statistics experiment. What Does The Normal Curve…

- 3 weeks, 5 days, 7 hours, 4 minutes ago

Game Theory Tuesdays: A Few Proofs There Are Infinitely Many Prime Numbers

image by zoutedrop. CC BY 2.0 A prime number has only itself and 1 as factors. A composite number always has a smaller proper factor, and every number can be written uniquely as a product…

- 3 weeks, 6 days, 22 hours, 24 minutes ago