•A letter or symbol that represents one specific number, known or unknown, is called a constant
16. In algebra, symbols (usually letters) are used to represent numbers. ... A variable is a letter or symbol used as a placeholder for an unknown value. What's a Variable? A constant can be a letter or a symbol that represents a fixed number.
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15. constant
•A letter or symbol that represents one specific number, known or unknown, is called a constant
16. In algebra, symbols (usually letters) are used to represent numbers. ... A variable is a letter or symbol used as a placeholder for an unknown value. What's a Variable? A constant can be a letter or a symbol that represents a fixed number.
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