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.
Practise Edexcel GCSE Computer Science Binary with exam-style questions for GCSE Computer Science. 100 questions 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, matched to the Edexcel GCSE Computer Science (1CP2) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.