... 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]

Light dependent reactions actors

Proof: The derivative of __ is __ | Advanced derivatives | AP Calculus AB | Khan Academy

View All

Meet The $700,000,000 Man Who Lost Everything | Dave Ramsey

I’m an entrepreneur. This is going to work. It didn’t. It didn’t. It didn’t. It didn’t. It didn’t. And then you put something out there that you kind of thought, “Yeah,” and then it goes big and you got, “Crap, I don’t know nothing.” You know, so you just…

Decomposing shapes to find area (add) | Math | 3rd grade | Khan Academy

What is the area of the figure? So down here we have this 10-sided figure, and we want to know its area. How many square meters does this figure cover? We have some measurements that seem helpful, but what’s not too helpful to me is I don’t know the spec…

Restoring Flows to Depleted Ecosystems | Breakthrough

My work is really around a campaign called “Changed the Course,” which is about getting the public engaged in freshwater conservation and beginning to figure out how we can restore flows of water to depleted rivers, wetlands, and freshwater ecosystems. We…

Local linearity and differentiability | Derivatives introduction | AP Calculus AB | Khan Academy

What we’re going to do in this video is explore the relationship between local linearity at a point and differentiability at a point. So, local linearity is this idea that if we zoom in sufficiently on a point, even a non-linear function that is differen…

Grand Canyon Adventure: The 750-Mile Hike That Nearly Killed Us (Part 2) | Nat Geo Live

By now it’s late October, it’s heading towards November, and we’ve actually done something remarkable. We have completed what was originally planned as the first section of our thru-hike. And we’ve got to a point in the river where we’re actually climbing…

Intermediate value theorem example | Existence theorems | AP Calculus AB | Khan Academy

Let F be a continuous function on the closed interval from -2 to 1, where F of -2 is equal to 3 and F of 1 is equal to 6. Which of the following is guaranteed by the intermediate value theorem? So before I even look at this, what do we know about the int…

... and why!

More Articles