Which of the following is not a positional number system?

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A Roman Number System
B Octal Number System
C Binary Number System
D Hexadecimal Number System

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Answer: A. Roman Number System

Answer: a) Roman Number System
Explanation: In a positional system (like binary, octal, decimal), the value of a digit depends on its position. Roman numerals use symbols (I, V, X) regardless of their position.

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Which of the following is not a positional number system?

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