What characters can be used to start a variable?

Answer 1

Letters
Underscore sign (_)

Answer 2

- The first character must be a letter, an underscore (_), or a dollar sign ($). Subsequent characters may be letters, digits, underscores, or dollar signs.
- Numbers are not allowed as the first character.
- Variable names cannot include a mathematical or logical operator in the name.

Answer 3

Variables can start only a latter or underscore(_) can't start with numbers sign or keywords.

Answer 4

you are wrong bro, only letters or underscore must used to start variables.

Answer 5

a letter, a number or a (_)