2 (two) is a number, numeral and digit.
It is the natural number following 1 and
preceding 3. It is the smallest and only even prime number. Because it forms the
basis of a duality, it has religious and spiritual significance in many cultures.
The digit used in the modern Western world to represent the number 2 traces its
roots back to the Indic Brahmic script, where "2" was written as two horizontal
lines. The modern Chinese and Japanese languages still use this method. The Gupta
script rotated the two lines 45 degrees, making them diagonal. The top line was
sometimes also shortened and had its bottom end curve towards the center of the
bottom line. In the Nagari script, the top line was written more like a curve
connecting to the bottom line. In the Arabic Ghubar writing, the bottom line was
completely vertical, and the digit looked like a dotless closing question mark.
Restoring the bottom line to its original horizontal position, but keeping the top
line as a curve that connects to the bottom line leads to our modern digit.[1]