String expressions
Which of the following is/are true?
- Numeric expressions may only contain numeric operators
- String expressions may only contain string operators
- Numeric expressions may only contain numeric operands
- String expressions may only contain string operands
- When evaluated, string expressions only produce string values
- When evaluated, string expressions may produce numeric or string values
- String expressions must have single values
- String expressions may have single values
- String expressions may contain operators
- String expressions must contain operators
- String expressions may contain string variables
- String expressions must contain string variables
- String expressions must not contain numeric variables
Explain your answer.