Since the earliest times and now a days have used numbers in their daily lives, to help the people counting, measuring , tell the time or to buy or sell things. so we need to know the Number system.
Number system: A Number System is a set of symbols called numarals, that represent numbers is call digits.
i.e 0,1,2,3,4,5,6,7,8,9 and this 10 digits makes numbers like 11,12,13,14,15,16..........
