Percent
An individual one can be called a character.
The " symbol is called a quotation mark.
symbol of number= #
The "&" symbol is called an ampersand.
The '&' symbol is called ampersand.
If you mean the symbol &, it is called an ampersand.
The "and" symbol is called an ampersand.
digit
An unknown number represented by a letter or symbol is a variable.
it is called the power
year
variable