Multiple choice general knowledge

The Number System based on "0" and "1" only is known as

  1. Binary System

  2. Barter System

  3. Number System

  4. Hexa Dexcimal System

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A Correct answer
Explanation

The Binary System uses only two digits: 0 and 1. This is the fundamental number system used in digital computing because electronic circuits can easily represent two states (on/off). Barter is an economic exchange system, not a number system.