Incidentally, I found out recently that the Sumerians probably used base 12 because they counted phalanges (three phalanges on 4 fingers on each hand), as they still do in some parts of China. Just random fact...
Actually, they used base 60.
A number was shown using both hands - one hand showing a value between one and twelve, the other hand showing how many twelves had already been added.
This is also why there are 24 hours in the day, why each hour is made of 60 minutes and each minute is made of 60 seconds.
(Score: 1) by PiMuNu on Wednesday March 19 2014, @03:19AM
Incidentally, I found out recently that the Sumerians probably used base 12 because they counted phalanges (three phalanges on 4 fingers on each hand), as they still do in some parts of China. Just random fact...
(Score: 2) by Fluffeh on Saturday March 22 2014, @04:13AM
Actually, they used base 60.
A number was shown using both hands - one hand showing a value between one and twelve, the other hand showing how many twelves had already been added.
This is also why there are 24 hours in the day, why each hour is made of 60 minutes and each minute is made of 60 seconds.