Numbers

Roman numbers are I,II,III,IV and V. After this 1 has to be added to 5 to make 6.

Therefore they have primarily 5 basic numbers. In Indian villages they could make a mound of paddy to make 1, and go on adding to make a 20, and put a big mound known as a score.

In Arabic originally they had nine numbers, and it is said 0 was added, which was on Indian origin. Anyway now we have primary 10 numbers in mathematics.

In earlier days Indian rupee also was having 16 annas then 4 paisas. British pound had 12 shillings and 4 pence.

When we go to computers there are only 2 numbers viz 0 and 1, in order to make a byte (8), kilobytes etc, which has to be an even number.

Systems

The FPS system is changed to CGS system otherwise known as metric system to make calculation easy by adding zeros. The anomaly is with S which could not be changed, due to the fact that earth revolves around the sun in 365 days 6 hours etc remain the same and time is such an element that it will create havoc in the change over. The day and night is 24 hours, which some wanted to make it 10+10, but was not acceptable. In Indian astrology there are 30+30 ghatis in a day, 12 houses in a horoscope.

Before Romans there were 10 months. December means 10, November 9 etc. Then Julius Caesar added July and Augustus added august to make it 12 months, without changing the names of earlier ones. In this case apparently metric system was changed to binary, primarily because moon makes slightly more than 12 cycles in a year.

In case of angle 360 degrees remain. In US they are using grades at 400 grades, but are not widely accepted.