... and why!

less than 1m read

·Nov 10, 2024

The reason this trick works every single time is elegantly simple. It has everything to do with the fact that their chosen card will always be in a pack that is third from the top.

That's because we had them take the pack containing their card, see? There's Boron, and put it on one of the piles. Then we had them put two more piles on top of that one.

So this stack is in order: pack number one, pack number two, pack number three, which contains their card, and at the bottom, pack number four. When they deal the cards out into rows, they are changing the packs into layers.

See, here we go! We've got 1, 2, 3, four cards. These are the cards that made up pack number one. Here comes pack number two; it is now becoming the second layer.

The third layer will be the components of pack number three, including Boron, their card. So when they finish and take the pack containing their card, because it is part of the third layer, it will be the third from the top, which means it will always be the third card from the left. Boron. [Music]

Sample size for a given margin of error for a mean | AP Statistics | Khan Academy

Dua Lipa: The 60 Minutes Interview

View All

Invasive Species 101 | National Geographic

(birds tweeting) [Announcer] Rapidly growing, consuming, adapting, they conquer. Jeopardizing local economies, threatening human health, and devastating entire ecosystems. [Man] As whole rows of cherished landmarks are condemned, brought home to town-dw…

The Bill of Rights: an introduction | US government and civics | Khan Academy

The Bill of Rights, as we know it today, were the first 10 amendments to the Constitution. These amendments guaranteed individual liberty to make sure that citizens had a stated expectation for what the government could or could not do to them. You can ki…

The Cheaper Your Pleasures, The Richer You’ll Be | Minimalist Philosophy

An ancient Greek philosopher named Epicurus believed that we don’t need all these extravagant pleasures to be happy. Expensive luxurious vacations to distant places, accumulating an excessive amount of money and possessions, or acquiring power through pol…

15 Things You Didn't Know About TUDOR

This is Fashion Fridays! Every Friday, we present you with a fashion icon or topic. Today, we’re looking at 15 things you didn’t know about Tudor. Welcome to a Luxe.com, the place where future billionaires come to get inspired! Hello, Aluxers! We are her…

BONUS: The Oxford comma | Punctuation | Grammar | Khan Academy

Hey grammarians, hey Paige, hi David! So, we’re going to talk today about the Oxford comma, which is just another word for another name for the serial comma. This is normally when you have a list of things; you punctuate them with a comma after each item…

Supply and demand curves in foreign exchange | AP Macroeconomics | Khan Academy

In a previous video, we’ve given an intuition on what foreign exchange markets are all about. In particular, we talked about the foreign exchange market between the U.S. dollar and the Chinese yuan. What we’re going to do in this video is think about the…

... and why!

More Articles