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Question

Which statement correctly describes the binary number system?

The correct answer is

It uses only two symbols 0 and 1

The binary number system has base (radix) 2, so it uses exactly two symbols, 0 and 1. Each position carries a weight that is a power of 2.

Example: \((1011)_2 = 1 \times 2^3 + 0 \times 2^2 + 1 \times 2^1 + 1 \times 2^0 = 11_{10}\).

Ten symbols (0–9) belong to the decimal system, which has base 10.

Binary uses no symbols other than 0 and 1; systems such as octal (0–7) and hexadecimal (0–9, A–F) use more symbols.

Binary is not the same as decimal, since their bases and place values differ.

Hence, the answer is It uses only two symbols 0 and 1.

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