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4 (four)

The number 4 has some interesting details. But any number is unique, and therefore you can come up with a lot of baloney for any number.

 


Composite number

The number 4 is the smallest composite number. You can divide it not only by 4 and 1, but also by 2.

 


Human body

Every person has 4 limbs, two arms and two legs. Animals often have four legs. Tables and chairs usually have four legs.

 


Dimensions

After length, width and height, time is often considered the fourth dimension. This plays a role in the general theory of relativity, where spacetime is used.

 


Analog clocks

On analog clocks, the hours are usually indicated with roman numerals. The number is almost always shown as ⅡⅡ.

Ⅻ
Ⅺ Ⅰ
Ⅹ Ⅱ
Ⅸ Ⅲ
Ⅷ
Ⅶ Ⅵ Ⅴ
Roman

 


Tetractys

For the ancient Greeks, the tetractys (tetra = four) was the symbol of completion. With ten dots, you can draw this as a triangle.

You can calculate it as 1 + 2 + 3 + 4 = 10.

 


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