Sumerians, that is said to be in 5th to 3rd millennia BC, until 2004 BC, said to have used Base 10 numbers in their calculations, for possible reasons that they could use their fingers to count them actually. 10 fingered beings find it simple to use Base 10 rather than other bases, and this is the reason its the standard one.
Let’s forget about Odd Jhon of Olaf Stapledon, and ask yourself, why the heck 12 hours, why not 10 in the clocks if it is so easy to count? Why the heck are the days and nights measured in 12 hours blocks?
Base 12 is duodecimal, which means 0,1,2,3,4,5,6,7,8,9,A,B,C… so if you want to write number 12 of the base 10, you will end up with number 10 of the duodecimal. Its interesting though, we use duodecimal to measure day and night, but we use base 10 decimal to communicate the time.
There are number of ways you can express Decimal numbers (Base 10).
2013 can be expressed as a 4 digit number, where 3 is filling the place of 1s, 1 is filling the place of 10s, 0 is filling the place of 100s, and 2 is filling the place of 1000s.
To elaborate, (2 * 1000) + (0 * 100) + (1 * 10) + (3 * 1) = 2000 + 000 + 10 + 3 = 2013.
To be yet more elaborate, how this worked, (2 * 10^3) + (0 * 10^2) + (1 * 10^1) + (3 * 10^0) = 2000 + 000 + 10 + 3 = 2013
There are too many interesting facts behind the number 10, please refer to http://richardphillips.org.uk/number/Num10.htm for more reference.
I am off for today! didnt have any other stupid idea to write about! Sorry to waste a lot of your time which you were already wasting any ways..
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- A Review of Math Fundamentals: Place Value (schooltutoring.com)