It was not invented. It comes after the number 3 in order of the numerical counting.
After the answer to 3 was invented.
Well Mr Fluffy was a genius but it actually it was his pal piggy the piglet! People just think it was Mr Fluffy! *
it was 4 years
The number zero was the first "invented" number.
a guy invented the number one!
No number was invented. They were discovered in ancient times.
a mathematician who invented number 1
Of course, it was the Aztecs because they invented the number system
R.A Bhatta invented the number zero
It was not invented it was discovered.
It is not known who invented the number eight. The number eight is just part of the numbering system.
The Chinese number system was invented in the 4th centaury.