In this post, I will use a generic model for phone numbers that has a 3-digit prefix and a running width of 7 digits. To start, I will fix the prefix to be 123, so P1=1 P2=2, P3=3. The 7-digit
A basic structure of numbering system can split any number to 2 basic sections: Prefix, which is a set of digits or letters identifying the “series” the subject number belongs to Running or functional part, which contains the numeric unique
An introduction to number classification and management and examples from the real world.