Which of the following statements about digital data representation is NOT true?

The statement that there is a limit to the number of things that can be represented in binary, necessitating hexadecimal, is not true. In fact, binary can represent an infinite number of values as long as you have enough bits. Each additional bit doubles the number of possible combinations that can be represented, allowing for the representation of more data and complexity.

Hexadecimal is often used in computing primarily for convenience and readability. It groups binary digits into manageable chunks, as each hexadecimal digit corresponds to four binary digits (bits), making it easier for humans to read and write large binary numbers. This does not imply that binary itself is limited; rather, hexadecimal is a shorthand notation that simplifies the representation and understanding of binary-coded data, especially in programming and digital systems.

Thus, while binary is capable of representing various data types like numbers, characters, and colors, hexadecimal serves more as a tool for efficiency and convenience, not as a necessity due to binary's limitations.