... 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]

Evidence of evolution: embryology | Evolution | Middle school biology | Khan Academy

Developing themes | Reading | Khan Academy

View All

15 Books To Read After You Made $1 Million

So you made a million dólares, now what? $1 million isn’t what it used to be, but now you’ve got some finance and experience to go exponential. If you’re not there yet, we recommend you go ahead and watch part one of this series, where we handpick the vid…

LC natural response intuition 2

We’ve been working on an intuitive description of the natural response of an LC circuit, and in the last video, we got everything set up. Now we’re ready to close the switch. Let’s close our switch, and now our switch is closed again. What happens? Well,…

Endangered River Dolphin Species’ Numbers On the Rise | National Geographic

[Lindsay] Within the last couple of decades, this population has dramatically decreased in number. (camera clicks) There is one really close. (camera clicks) (gentle music) They are incredibly challenging to study because when they do surface, they don’t…

Creating The First 3D Scan of an Endangered Species | Explorers In The Field

[Music] Things are disappearing at an increasing rate, both animals and cultural sites. 3D scanning is a way to digitally capture the world and make a copy of something. My personal mission is to build technologies to help explore the worlds and the disap…

Extremophiles 101 | National Geographic

[Narrator] Intense heat, freezing cold, high acidity, and radioactivity. These harsh environments don’t seem hospitable for life, but some organisms not only survive but thrive under such extreme conditions. The name extremophile means extreme lover. Th…

Writing a differential equation | Differential equations | AP Calculus AB | Khan Academy

Particle moves along a straight line. Its speed is inversely proportional to the square of the distance s it has traveled. Which equation describes this relationship? So I’m not going to even look at these choices and I’m just going to try to parse this …

... and why!

More Articles