As early civilizations developed, they came up with different ways of writing down numbers. Many of these systems, including Greek, Egyptian and Hebrew numerals, were essentially extensions of tally marks. The used a range of different symbols to represent larger values.

Hindu-Arabic numerals, set of 10 symbols—1, 2, 3, 4, 5, 6, 7, 8, 9, 0—that represent numbers in the decimal number system. They originated in India in the 6th or 7th century and were introduced to Europe through the writings of Middle Eastern mathematicians, especially al-Khwarizmi and al-Kindi, about the 12th century.

In number theory, 1 is the value of Legendre's constant, which was introduced in 1808 by Adrien-Marie Legendre in expressing the asymptotic behavior of the prime-counting function. Legendre's constant was originally conjectured to be approximately 1.08366, but was proven to equal exactly 1 in 1899.

Confronting languages that don't have numbers or many numbers leads you inevitably down this track of questioning what your world would be like without numbers, and appreciating that numbers are a human invention and they're not something we get automatically from nature.

Nonetheless, tallying systems are considered the first kind of abstract numeral system. The first known system with place value was the Mesopotamian base 60 system ( c. 3400 BC) and the earliest known base 10 system dates to 3100 BC in Egypt.

Keeping track of small numbers of items with tally marks was sufficient for individuals and small groups. As societies began to form and grow, however, trade became more complex, requiring the development of numbers to perform simple mathematical calculations.

Maths is a product of the conscious mind: both a tool and a language used to make sense of the designs and functions of our universe – quenching humans' instinctual thirst for rationalisation.

Number systems have progressed from the use of fingers and tally marks, perhaps more than 40,000 years ago, to the use of sets of glyphs able to represent any conceivable number efficiently. The earliest known unambiguous notations for numbers emerged in Mesopotamia about 5000 or 6000 years ago.

Since 1,2,3,4,5,6,7,8,9 and 0 are sign or a graphical representation for account, we can have other sign or graphical representatives like roman numbers, braille and object counting etc. We used roman numbers and word number before zero was invented.

The number 9 is revered in Hinduism and considered a complete, perfected and divine number because it represents the end of a cycle in the decimal system, which originated from the Indian subcontinent as early as 3000 BC.

The earliest evidence of written mathematics dates back to the ancient Sumerians, who built the earliest civilization in Mesopotamia. They developed a complex system of metrology from 3000 BC.

The origins of numbers date back to the Egyptians and Babylonians, who had a complete system for arithmetic on the whole numbers (1,2,3,4,. . . ) and the positive rational numbers.

pi, in mathematics, the ratio of the circumference of a circle to its diameter. The symbol π was devised by British mathematician William Jones in 1706 to represent the ratio and was later popularized by Swiss mathematician Leonhard Euler.

Infinity is a mathematical concept originating from Zeno of Elia (~450 BC) who tried to show its “physical” impossibility. This resulted in the “arrow paradox”, but which was solved later on. Many mathematicians and physicists went on to try understanding infinity and to explain it by various theories and experiments.

9,000 years ago: Human settlement of Mehrgarh, one of the earliest sites with evidence of farming and herding in South Asia. In April 2006, Nature note that the oldest (and first early Neolithic) evidence for the drilling of human teeth in vivo (i.e. in a living person) was found in Mehrgarh.

Numbers do not exist in all cultures. There are numberless hunter-gatherers embedded deep in Amazonia, living along branches of the world's largest river tree. Instead of using words for precise quantities, these people rely exclusively on terms analogous to “a few” or “some.”

YES: Mathematical Platonism. This school contends that mathematical objects exist independently of our being able to conceptualize them. Although few philosophers are willing to espouse this view anymore, it has had many notable proponents, even amongst logicians. Kurt Godel is perhaps the most famous example.

“Natural numbers were created by God, everything else is the work of men.” Kronecker in a lecture for the Berliner Naturforscher Versammlung (1886). Leopold Kronecker (1823–1891) was a German mathematician who worked on number theory and algebra.

Sumerian can be considered the first language in the world, according to Mondly. The oldest proof of written Sumerian was found on the Kish tablet in today's Iraq, dating back to approximately 3500 BC.

For thousands of years, humans used various forms of tallies and stones to count things. But maintaining large piles of stones and long lists of tallies became cumbersome. So grew the need to group numbers together.