Multiple choice

Which number system is not a positional notation system?

  1. ROMAN

  2. binary

  3. decimal

  4. hexadecimal
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A Correct answer
Explanation

Roman numerals are not positional - they use additive notation where symbol values are fixed regardless of position (VII always means 5+1+1=7). Binary, decimal, and hexadecimal are all positional systems where digit value depends on place value (units, sixteens, etc.).

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