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The word "variable" represents an unknown number.
The letter that represent the composite number is letter C.
An unknown number represented by a letter or symbol is a variable.
In algebra, letters like a, b, x, y, all represent numbers. We use letters like this when we have an unknown number.
variable
b
a variable.
An algebraic expression uses a letter to represent an unknown quantity.
An unknown variable
The word "variable" represents an unknown number.
The letter that represent the composite number is letter C.
VARIABLE
mnemonic * * * * * A variable
An unknown number represented by a letter or symbol is a variable.
A letter used to represent a number is a variable of sometimes a constant.
In algebra, letters like a, b, x, y, all represent numbers. We use letters like this when we have an unknown number.
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.