... 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]

Comparing constants of proportionality | 7th grade | Khan Academy

Critiquing Startup Websites With Instacart's First Designer

View All

Rhinos For Sale | Explorer

It’s a bit of an irony to be here because, on one hand, it’s beautiful, peaceful, and serene, but you’re actually at the eye of the storm when it comes to the war on rhinos. So we go over to always a very, very special part of this particular auction, wh…

The Deadliest Virus on Earth

In the 1970s, thousands of Chickenheads rained from the sky in Europe, making foxes and other wildlife confused and very happy. Why? They were filled with a vaccine to fight the deadliest virus known to humanity. Since the 1930s, a rabies epidemic had bee…

Introduction to production functions | APⓇ Microeconomics | Khan Academy

You will hear the term production function thrown around in economics circles, and it might seem a little intimidating and a little mathy at first. But as you’re about to see, it’s a fairly basic idea. It’s this idea that you could have these various inp…

Explorer: The Last Tepui Trailer | National Geographic

First descents are basically modern exploration. When you’re climbing a piece of rock that no human has ever touched, you literally step into the unknown. [Music] We’re on an expedition into the glorious heart of South America. Oh look, right there, Dr.…

Exponential and logistic growth in populations | High school biology | Khan Academy

Let’s say that we were starting with a population of 1,000 rabbits, and we know that this population is growing at 10% per month. What I want to do is explore how that population will grow if it’s growing at 10% per month. So, let’s set up a little table …

Irregular plural nouns | base plurals | The parts of speech | Grammar | Khan Academy

Hello, Garans. I wanted to talk today about a different kind of a regular plural. So, we’ve been talking about regular plurals, where you take a word, and you add an S. For example, the word ‘dog’ becomes ‘dogs.’ You add an S, and that this is the regula…

... and why!

More Articles