CompTIA ITF+ (FC0-U61) — Question 168

Which of the following notational systems uses the most characters to represent the decimal number 10?

Answer options

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

Correct answer: C

Explanation

The decimal system uses two characters ('1' and '0') to represent the number 10, while the other systems use fewer characters. For example, binary uses four characters ('1010'), octal uses three ('12'), and hexadecimal uses two ('A'). Thus, the decimal system has the highest character count for this representation.