If you are talking about math then its usually " x " but if that is already use in the expression and you want to use another symbol to represent a DIFFERENT number then you can use y or a or so on.
A variable.
The symbols used are called variables.
That is called a variable. A letter is often used.
The choice of a token to represent an unknown is wide open. Commonly, x and y are used, but one may use any letter of the alphabet, particularly if it has some phonic association. c is often used as a token for the speed of light; as a substitute for the word celerity.
An unknown number represented by a letter or symbol is a variable.
mnemonic * * * * * A variable
If you are talking about math then its usually " x " but if that is already use in the expression and you want to use another symbol to represent a DIFFERENT number then you can use y or a or so on.
variable
A variable.
The symbols used are called variables.
A variablẹ
A variable
Variable: A letter or symbol used to represent a number or quantities that vary
It is called a variable
That is called a variable. A letter is often used.
it is any letter or mathematical symbol that represent a number or a set of number