A from z
Composed of letters and numbers
'Alpha' refers to letters. You may recognize it from 'Alphabet'. Numeric refers to numbers. Alpha + Numeric = Alphanumeric, or a list of figures that include both letters and numbers.
It is 80903, exactly as in the question.
Passwords are commonly alphanumeric. For example, 23$mathdoc2$!@9 is an alpha numeric password. That one is the PIN number for my Swiss bank account. 10$standardman@!10
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alpha numeric refers to the keypad on your cell phone...it is the keypad which has numbers and letters of the alphabet-thus alpha being the alphabet and numeric being the numbers.
ruby
The four numeric systems are Roman, Alpha, Mayan, and Arabic.
Alpha-numeric .
A from z
00.9
alpha-numeric digits
Composed of letters and numbers
alphanumeric
Alpha-numeric .
Group1 is considered Alpha-Numeric because it has both alphabet characters and numeric characters.