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Answer:
3. Variable
Step-by-step explanation:
A Variable is a symbol, usually a letter that stands for a number.
A variable is a symbol, usually a letter that stands for a number.
- A variable simply refers to the symbol that works as a placeholder for the expressions or quantities that can change or vary.
- A variable can also be used to represent the argument of a function or the arbitrary elements that are in a set. Therefore, a variable is a symbol, usually a letter that stands for a number.
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