3

The number three (3 in decimal form) is the fourth non negative integer/natural number, the third positive integer, and the number that follows 2 and precedes 4 on the number line. It is the second prime number, as well as the first odd prime number. It is also the second triangular number. It is fairly simple to picture three objects in one's head, although it is not as easy as picturing 2, 1, or 0 objects in one's head.