What is decimal number system?
Decem is a latin word. Decem means ten. There are total 10 symbols in this numbers system from 0 to 9.
What are symbols in decimal number system?
Followings are the symbol  in decimal number system;
0 1 2 3 4 5 6 7 8 9
Decimal number system is  positional number system. Position plays very important role in this system. For example;
1427 ≠1472
1427 = (1*103) + (4*102) + (2*101) + (7*100)
1472 = (1*103) + (4*102) + (7*101) + (2*100)
Decimal number system is the most commonly used number system by the human being.
| Decimal | Binary | Octal |
| 0 | 000 | 0 |
| 1 | 001 | 1 |
| 2 | 010 | 2 |
| 3 | 011 | 3 |
| 4 | 100 | 4 |
| 5 | 101 | 5 |
| 6 | 110 | 6 |
| 7 | 111 | 7 |