An information theorist studying data compression models determines that the efficiency factor of a specific algorithm is given by ϵ=log27\epsilon = \log_2 7ϵ=log27. A developer claims that this factor is a rational number and can be expressed exactly as a ratio of two integers pq\displaystyle \frac{p}{q}qp. Use the method of proof by contradiction to show that the developer's claim is incorrect.
107 exam-style questions on OCR A Level Maths 1.1.4 Proof by contradiction (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.