Which numbering system uses base 16 and digits 0-9, A?

Which numbering system uses base 16 and digits 0-9, A?

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

Answer: (A)

Base-16, or hexadecimal, uses sixteen symbols: 0 through 9 for values zero to nine, and A through F for ten to fifteen. It’s set up so each digit can represent 0–15, which is why the letter A is used to stand for ten. Hex is especially handy in computing because two hex digits can neatly represent one byte (00 to FF). The other common systems operate with different bases: binary uses 0 and 1 (base 2), octal uses 0–7 (base 8), and decimal uses 0–9 (base 10).

Base-16, or hexadecimal, uses sixteen symbols: 0 through 9 for values zero to nine, and A through F for ten to fifteen. It’s set up so each digit can represent 0–15, which is why the letter A is used to stand for ten. Hex is especially handy in computing because two hex digits can neatly represent one byte (00 to FF). The other common systems operate with different bases: binary uses 0 and 1 (base 2), octal uses 0–7 (base 8), and decimal uses 0–9 (base 10).