Mind Your Decisions

How Sports Flopping Illustrates The Prisoner’s Dilemma – Game Theory Tuesdays

I came across a fun example of how sports illustrate the prisoner’s dilemma, the most famous problem in game theory. In the prisoner’s dilemma, two partners are held on…

- 1 month, 1 day, 14 hours, 5 minutes ago

Can You Solve The Probability The Newborn Is A Boy? Technical Interview Question – Sunday Puzzle

On the morning of January 1, a hospital nursery has 3 boys and some number of girls. That night, a woman gives birth to a child, and the child is placed in the nursery. On January 2, a…

- 1 month, 3 days, 11 hours, 40 minutes ago

What Is 7 + 7 ÷ 7 + 7 × 7 – 7 Equal To? The Correct Answer Explained

Here we go again, another order of operations problem. This equation has been shared on Twitter and Facebook and many people are confused about the correct answer. 7 + 7 7 + 7 7 7…

- 1 month, 6 days, 12 hours, 57 minutes ago

The Best First Move In Misere Tic-Tac-Toe (3-In-A-Row Is Losing). Game Theory Tuesdays

Let’s play a game of tic-tac-toe. I’ll even let you go first. But there is a twist in this game. The first person to complete 3 in a row LOSES the game. This is the misere…

- 1 month, 1 week, 1 day, 13 hours, 9 minutes ago

The Rectangle Ratio, A Surprising Answer – Sunday Puzzle

Start with a square with length 1; label it R1. Create a new rectangle as follows: attach a rectangle of area 1 to the right side and then attach a rectangle of area 1 to the top side. The…

- 1 month, 1 week, 3 days, 13 hours, 2 minutes ago

Adults Are Arguing About This 3rd Grade Math Problem. The Correct Answer Explained

A dad in Michigan wrote to the The Mining Journal about a problem assigned third graders. “If Sue runs around the track twice, and John runs around the track four times more than Sue,…

- 1 month, 1 week, 6 days, 12 hours, 11 minutes ago

Award-Winning London-Based Architects Mzo Tarr Use Game Theory To Design Buildings! Game Theory Tuesdays

There is a fascinating example of applying game theory to architecture described in Archinect. Mzo Tarr Architects is self-described as “chartered architects using game theory to…

- 1 month, 2 weeks, 1 day, 13 hours, 11 minutes ago

Which Can Size Is Best? The Optimal Cylinder Riddle. Sunday Puzzle

This is a problem from Math Puzzles Volume 2 that I had not posted about before. Imagine you want a cylindrical can to contain a fixed volume V. There are many possible shapes for the can…

- 1 month, 2 weeks, 3 days, 12 hours, 49 minutes ago

Harvard 1869 Admissions Exam Algebra Problem

This problem appeared on the admissions test to Harvard in 1869: “A man bought a watch, a chain, and a locket for $216. The watch and locket together cost three times as much as the…

- 1 month, 2 weeks, 6 days, 12 hours, 39 minutes ago

Why Social Media Might Make Companies Less Generous – Game Theory Tuesdays

image by frankieleon. CC BY 2.0 Years ago I bought a 12-pack of Coca Cola and stored it in my pantry. The next day I saw one can had a small pinhole puncture that dried up into a syrupy…

- 1 month, 3 weeks, 1 day, 12 hours, 1 minute ago