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Why Does The Other Line Always Move Faster? Game Theory Tuesdays

Note: this is a statistics topic rather than a game theory post At the supermarket checkout, should you pick the shorter line or the line where people have fewer items? I have gotten into heated arguments with people who insist on a particular way. And yet, the discussion is actually moot since there is a … Continue reading Why Does The Other Line Always Move Faster? Game Theory Tuesdays Read more ›

What Number Doubles When Its Last Digit Becomes Its First Digit? Sunday Puzzle

If the last digit of this positive number becomes the first digit, the resulting number is exactly twice as large. My number is the smallest positive number with this property. What is my number? You might be able to find some numbers that almost work. 25 would become 52, which is close to 25(2) = … Continue reading What Number Doubles When Its Last Digit Becomes Its First Digit? Sunday Puzzle Read more ›

What Is 48÷2(9+3) = ? The Correct Answer Explained

What is the correct answer to the following expression? 48÷2(9+3) = The problem often generates debate and has millions of comments on Facebook, Twitter, YouTube and other social media sites to join the ranks as a meme. Watch the video where I explain the correct answer. What is 48÷2(9+3) = ? The Correct Answer Explained … Continue reading What Is 48÷2(9+3) = ? The Correct Answer Explained Read more ›

Book Recommendation – Introducing Game Theory: A Graphic Guide. Game Theory Tuesdays

I am thrilled to add another book to my list of the best game theory books. The book is Introducing Game Theory: A Graphic Guide by economists Dr. Ivan and Dr. Tuvana Pastine and illustrated by Tom Humberstone. I liked this book so much I am adding it as the 8th selection of the “top … Continue reading Book Recommendation – Introducing Game Theory: A Graphic Guide. Game Theory Tuesdays Read more ›

Can You Solve The Identical Twins Puzzle?

Aryabhata mentions he has a twin brother Bhaskara. If 1/10 sets of twins are identical, and 9/10 sets of twins are fraternal, what is the probability that Aryabhata and Bhaskara are identical twins? (Identical twins develop from a single fertilized egg and have the same sex. Fraternal twins develop from two separate fertilized eggs. Suppose … Continue reading Can You Solve The Identical Twins Puzzle? Read more ›

To Save Elephants In Africa, Perhaps China Should Make Its Ivory Ban Permanent. Game Theory Tuesdays

image by Theo Crazzolara. CC BY 2.0 There is an interesting article on The Conversation about the ivory trade and China. (*Thanks to my friend sending the article via Facebook.) It is estimated Africa has about 350,000 savanna elephants, of which roughly 8% are killed yearly for poaching. Losing 27,000 elephants yearly is unsustainable, and … Continue reading To Save Elephants In Africa, Perhaps China Should Make Its Ivory Ban Permanent. Game Theory Tuesdays Read more ›

Can You Solve The Hiding Cat Puzzle? Tech Interview Question

A cat is hiding in one of five boxes that are lined up in a row. The boxes are numbered 1 to 5. Each night the cat hides in an adjacent box, exactly one number away. Each morning you can open a single box to try to find the cat. Can you win this game … Continue reading Can You Solve The Hiding Cat Puzzle? Tech Interview Question Read more ›

Can You Solve The Ring Area Puzzle? And An Introduction To Visual Calculus

What is the area of a ring (an annulus), the region between two concentric circles? The line segment is tangent to the inner circle and has a length of 8. Watch the video for four solution methods and for a mention of a fifth solution method employing visual calculus. Can You Solve The Ring Area … Continue reading Can You Solve The Ring Area Puzzle? And An Introduction To Visual Calculus Read more ›

“Pick The Vinegar That Isn’t Made From Petroleum.” Quality Signaling, Game Theory Tuesdays

I usually buy a gallon jug (~4 liters) of vinegar to clean my floors and sinks, so I buy the cheapest generic brand. But recently I have been thinking about using vinegar for salad dressings and pickling, and I wondered if I should buy premium vinegar with higher quality. Heinz explains that its vinegars are … Continue reading “Pick The Vinegar That Isn’t Made From Petroleum.” Quality Signaling, Game Theory Tuesdays Read more ›