Question

what is variable write any three rules of variable​

Answer 1

Answer:

In mathematics, a variable is a symbol or letter, such as "x" or "y," that represents a value. ... For example, a variable of the string data type may contain a value of "sample text" while a variable of the integer data type may contain a value of "11".

All variable names must begin with a letter of the alphabet or an underscore(_). After the first initial letter, variable names can also contain letters and numbers. Variable names are case sensitive. No spaces or special characters are allowed.

Explanation:

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