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Day 18 of 2020

18

is the area and also the perimeter of a rectangle with 6 and 3-unit sides.
is the only number that is twice the sum of its digits.

= 3 + 4 + 5 + 6 (sum of consecutive numbers)
= 33 - 32
= (root2 + root8)2

18 = 9 + 9
81    9 x 9

183 = 5832 and 5 + 8 + 3 + 2 = 18

183 =    5832
184 = 104976 (both results together include all digits once)

18 equilateral triangles make a hexagon ring.

is the solution to the classic puzzle: "my age today is three times what it will be three years from now minus three times what my age was three years ago. How old am I?".

is a hate number symbol. The first letter of the alphabet is 'A'; the eighth letter of the alphabet is 'H'. Thus, 1 plus 8, or 18, equals 'AH', an abbreviation for Adolf Hitler. Neo-Nazis use 18 in tattoos. The number is also used by "Combat 18", a violent British neo-Nazi group that chose its name in honor of Adolf Hitler. The number 18 is also considered a number of the devil due to the fact that 6+6+6=18, and 666 is the Number of the Beast.

On Earth, the length of a day 900 million years ago was only about 18 hours. - Science magazine

Another interesting Finnish word that contains a sequence of 18 dots: Pääjäävääjää ('the main waiver' in Finnish, partitive case). - posted by Juhani Sirkiä -

The 18-letter words 'conservationalists' and 'conversationalists' are anagrams of each other. They are the longest pair of anagrams with such properties.

There are 18 chapters in the Hindu epic tale Bhagavad Gita.


Copyright © Archimedes' Lab - many thanks are extended for their information.

All daily items change at midnight GMT (it is roughly 6:54 AM GMT). Change.


18

Day number   of 2020. Below are various representations of the number 18, some dating thousands of years, and some very modern.

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Chinese

Egyptian

Mayan

 

Babylonian

Greek

Abacus

Roman

 

Hex

 

Binary

 

Copyright © Jo Edkins - many thanks are extended for her wonderful work.

 



 

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