Which of the following is a valid hexadecimal form for 15?

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Multiple Choice

Which of the following is a valid hexadecimal form for 15?

Explanation:
Hexadecimal uses digits 0-9 and a-f, and you can pad with leading zeros without changing the value. The decimal 15 is represented as f in hex, and adding leading zeros gives 000f, which is still the same number. Among the options, this form sticks to pure hex digits with no extra syntax, making it the universally valid hex numeral for 15. The other forms introduce a language-specific prefix (like 0x) or rely on case or formatting that isn’t part of a plain hex number in all contexts, so 000f is the most unambiguous choice.

Hexadecimal uses digits 0-9 and a-f, and you can pad with leading zeros without changing the value. The decimal 15 is represented as f in hex, and adding leading zeros gives 000f, which is still the same number. Among the options, this form sticks to pure hex digits with no extra syntax, making it the universally valid hex numeral for 15. The other forms introduce a language-specific prefix (like 0x) or rely on case or formatting that isn’t part of a plain hex number in all contexts, so 000f is the most unambiguous choice.

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