**Numbers** are Interesting, ALWAYS đ

A **number** is an abstract entity that represents a count or measurement. A symbol for a number is called a numeral.

See Wikipedia for details, but **wait**…

**Teenage** start from 13 and **13** known as lucky, unlucky, or significant number – in many cultures thirteen is regarded as an unlucky number! Unreasoned fear of the number 13 is termed triskaidekaphobia. There are lots of Hotel, Place where there no ’13th’ floor or room, house, or even road! Not only 13, all numbers has some unique and interesting meanings…

Do you know about Fibonacci Number? I guess the answer is ‘Yes’!

A scrambled version 13, 3, 2, 21, 1, 1, 8, 5 (Sloane’s A117540) of the first eight Fibonacci numbers appear as one of the clues left by murdered museum curator Jacque Saunière in D. Brown’s novel *The Da Vinci Code* (Brown 2003, pp. 43, 60-61, and 189-192). In the Season 1 episode "Sabotage" (2005) of the television crime drama *NUMB3RS*, math genius Charlie Eppes mentions that the Fibonacci numbers are found in the structure of crystals and the spiral of galaxies and a nautilus shell.

There is lots of thing to know about numbers, leave them now, what’s special about a (particular) number? look at bellow…

0 is the additive identity.

1 is the multiplicative identity.

2 is the only even prime.

3 is the number of spatial dimensions we live in.

4 is the smallest number of colors sufficient to color all planar maps.

5 is the number of Platonic solids.

6 is the smallest perfect number.

7 is the smallest number of faces of a regular polygon that is not constructible by straightedge and compass.

8 is the largest cube in the Fibonacci sequence.

9 is the maximum number of cubes that are needed to sum to any positive integer.

10 is the base of our number system.

Huh? Well, I recommend you to take a look in this page, I wonder when I saw they wrote ‘Special About This Number‘ continued to 9999!

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