Hexadecimal numbers are typically preceded by which symbol?

Hexadecimal numbers are often preceded by the symbol X' to clearly denote that the number following it is in base 16. This notation helps differentiate hexadecimal values from decimal or binary representations, preventing potential confusion when interpreting numerical values in programming or engineering contexts. The use of the X' notation is particularly common in various programming languages and technical documentation, as it designates a specific numerical base, making it easy for programmers and technicians to recognize and work with hexadecimal numbers effectively.