Mind Your Decisions

Monday Puzzle: Dealing to the First Ace

In poker, the order of play is determined by the seating order. The player to the left of the dealer has to act first, followed by each player to the left in a counter-clockwise fashion.…

- 1 week, 4 days, 14 hours, 26 minutes ago

New Video – Math In Movies: The “Working Together” Problem From Little Big League (1994)

If Joe can paint a house in 3 hours, and Sam can paint the same house in 5 hours, how long will it take them to paint the house if they work together? This problem is from the movie Little…

- 2 weeks, 14 hours, 45 minutes ago

The Area of a Circle Formula Explained Intuitively (Video)

Everyone knows the area of a circle is πr2, where r = the radius, but why is this the case? I have posted a video animation that illustrates how a circle can be transformed into a…

- 2 weeks, 1 day, 14 hours, 31 minutes ago

Game Theory Tuesdays – The Prisoner’s Dilemma Explained in 2 Minutes (Video)

Recently I spent a lot of time creating animated educational videos to make math and game theory more interesting to a wider audience. This week I am posting a video each day, and that…

- 2 weeks, 3 days, 14 hours, 43 minutes ago

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, 4 days, 14 hours, 7 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, 6 days, 14 hours, 3 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…

- 3 weeks, 14 hours, 39 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…

- 3 weeks, 1 day, 13 hours, 8 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…

- 3 weeks, 2 days, 10 hours, 26 minutes ago