Question: Write a regular expression for variable names which can be between 1 and 1 0 character long. Variable names must start with a letter or

Write a regular expression for variable names which can be between 1 and 10 character long. Variable
names must start with a letter or an underscore. The following characters can be letters or underscores or digits.
Examples of valid variable names include number, _name1, na021b1a2. Explain your answer.
Write a regular expression for variable names

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