A single bit can represent two distinct binary states, 0 or 1.
An automated metropolitan transit network must assign a unique, fixed-length binary code to identify each of the 53 designated emergency evacuation zones along a subway line.
State the minimum number of bits required to uniquely represent all 53 zones, and give a reason for your answer.
117 exam-style questions on Edexcel GCSE Computer Science Binary, covering Binary representation and number of states, Unsigned and two's complement integers, Converting denary and 8-bit binary, Binary addition and binary shifts, Concept of overflow, and Hexadecimal notation and conversion. Each one has a worked solution and a mark scheme showing where the marks go.