Mind Your Decisions

Monday Puzzle: Three Interesting Sequences

Today you get three puzzles. Puzzle 1 What is the product of the following set of numbers? (1 – 1/4)(1 – 1/9)(1 – 1/16)(1 – 1/25)(1 – 1/36)(1 – 1/49) Can…

- 2 weeks, 5 days, 8 hours, 30 minutes ago

Now Available – “Divide Numbers By Connecting The Dots”

I developed a method to divide numbers visually, and per requests I have written an ebook detailing the method. Here is a video preview of how you can divide numbers by connecting the dots.…

- 3 weeks, 1 day, 17 hours, 20 minutes ago

Support MindYourDecisions on Patreon (like an ongoing Kickstarter)

Im truly thankful for all the support from people reading and sharing blog posts, videos, and my books. Math and Game Theory are not the most popular topics and I appreciate the support…

- 3 weeks, 1 day, 17 hours, 21 minutes ago

YouTube Video – Quickly Multiply Numbers like 83×87, 32×38, and 124×126

I have posted a new video to the MYD YouTube channel that I think you’ll enjoy. YouTube Video – Quickly Multiply Numbers like 83×87, 32×38, and 124×126 For more…

- 3 weeks, 2 days, 17 hours, 40 minutes ago

Game Theory Tuesdays: Why Most Games Have An Odd Number of Nash Equilibria

An observant game theory student might notice a pattern that many games have an odd number of Nash equilibria. For example, the prisoner’s dilemma has 1 solution in pure strategies…

- 3 weeks, 4 days, 8 hours, 30 minutes ago

Monday Puzzle: Loading A Pair of Dice

In a standard die, each of the six outcomes 1, 2, 3, 4, 5, 6 shows up with equal chance. However, it is physically possible to rig the die so that some numbers show up more frequently. In…

- 3 weeks, 5 days, 8 hours, 30 minutes ago

YouTube Video – Square A Number In The 50s In Your Head

I posted a new video to the MindYourDecisions YouTube page about a cool math trick. YouTube – Square A Number In The 50s In Your Head Here are all the squares of numbers in the 50s.…

- 1 month, 1 day, 18 hours, 9 minutes ago

Game Theory In The News (Sept 2014)

This is the current installment of the monthly series “Game Theory in the News” and it will cover stories from the last month of September. My hope is to highlight stories that…

- 1 month, 3 days, 8 hours, 30 minutes ago

Game Theory Tuesdays: 2×2 Matrix Game Solver

Last week instead of writing a post on game theory I ended up writing some code related to game theory. The most commonly described games are 2×2 matrix games, and in an effort to make…

- 1 month, 4 days, 8 hours, 30 minutes ago

Monday Puzzle: Probability Of Forming A Triangle

If you break a stick at 2 random points, what’s the probability the 3 lengths can make a triangle? Hint: Recall this important fact about triangles. (You may know the answer, but you…

- 1 month, 5 days, 8 hours, 30 minutes ago