Binary is a numbering system that uses only two digits, 0 and 1. It is used in computers to represent data and instructions. Each digit in a binary number represents a power of 2. For example, the binary number 1001 represents the decimal number 9, because 1 * 2^3 + 0 * 2^2 + 0 * 2^1 + 1 * 2^0 = 9. Binary is the basis of all digital electronics and is essential for understanding how computers work.
What is the base of the binary number system?
What is the smallest positive number that cannot be represented in binary?
Which of the following is not a valid binary number?
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