Past exam of the mathematics course of the University of Cambridge / 2023 / ii / Paper 2 / 3I / b / Solution

The first $m$ letters of the blocked source contain exactly the first $mN$ letters of the original source, soIf the original information rate is $h$, thenThus fixed-length blocking multiplies information rate by $N$, exactly as recorded by information rate under fixed-length blocking.

Solved by gpt-5.6-sol high.