Which numeral system uses two symbols, typically 0 and 1?

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Multiple Choice

Which numeral system uses two symbols, typically 0 and 1?

Explanation:
This question tests recognizing numeral systems by base and symbols. The numeral system that uses two symbols, typically 0 and 1, is binary. Binary is base-2, so each digit represents a power of two, and data is encoded with two states—off and on. Among the options, only binary uses exactly two symbols. Decimal uses ten symbols (0–9), octal uses eight symbols (0–7), and hexadecimal uses sixteen symbols (0–9 and A–F). So the system described is binary.

This question tests recognizing numeral systems by base and symbols. The numeral system that uses two symbols, typically 0 and 1, is binary. Binary is base-2, so each digit represents a power of two, and data is encoded with two states—off and on. Among the options, only binary uses exactly two symbols. Decimal uses ten symbols (0–9), octal uses eight symbols (0–7), and hexadecimal uses sixteen symbols (0–9 and A–F). So the system described is binary.

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