Which term describes the numbering system with base 16?

Which term describes the numbering system with base 16?

• A. Binary Number System
• B. Decimal Number System
• C. Octal Number System
• D. Hexadecimal Number System

Answer: (D)

Hexadecimal is the term for a base-16 numbering system. It uses digits 0 through 9 plus letters A through F to represent values 10 through 15. This setup is handy in computing because each hex digit corresponds to exactly four bits, making it a compact and readable way to express binary data. You’ll often see it in contexts like color codes (for example, FF00FF) and memory addresses (often shown with a 0x prefix). In contrast, binary uses base 2, decimal uses base 10, and octal uses base 8, so only hexadecimal matches base 16.

Hexadecimal is the term for a base-16 numbering system. It uses digits 0 through 9 plus letters A through F to represent values 10 through 15. This setup is handy in computing because each hex digit corresponds to exactly four bits, making it a compact and readable way to express binary data. You’ll often see it in contexts like color codes (for example, FF00FF) and memory addresses (often shown with a 0x prefix). In contrast, binary uses base 2, decimal uses base 10, and octal uses base 8, so only hexadecimal matches base 16.