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A variable is described as a symbol for a number we do not know yet it is usually the X or Y. Variables can be more than one number. In elementary variable is usually assemble and commonly a single letter that represents the specific number called the value of the variable. In more advanced math of variable is a symbol for a mathematical object which can be a number, a factor, a matrix or even a function. In computer science a variable represents some values stored in computer memory.
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