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R. Crabb

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Coin Flip

I like how the straightforward intuition doesn't quite work. For a sequence of 3 flips, any of the patterns are equally likely, so why wouldn't they be the same? Obviously the trick is that you start over each time you hit the sequence. If you just looked at the overall sequence of flips throughout the day and just counted how many times each sequence appeared, the numbers should be equal.

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Gold or silver?

Sure, but which has more mass?

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Gold or silver?

Hint: it's not the same

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Gold or silver?

No, it comes from the fact that the force from gravity depends on the distance between the center of mass of the two objects in question, because gold is denser than silver, its center of mass will be slightly closer to the center of earth's mass.

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