Question

the variable name must begin with a number true or false

Answer 1

it's false.'coz in equation only x square is also there but the coefficient is 1

Answer 2

The correct answer is False. The variable name cannot begin with a number.

Explanation:

The following is ANSI standards to construct a valid variable name:

• The variable name can have alphabets, digits and underscore characters.
• The variable name should start with an “alphabet letter or underscore” (_) character.
• The variable names can consist of letters and numbers after the first letter. spaces or special characters are also not allowed in the variable name.  
• The uppercase characters are different from lowercase characters in the variable name.  
• The variable name should not contain the language-specific keyword or reserved word.
• As per ANSI standard, the variable name can have a maximum length of 31 characters.