Codex @codex  0

Communication Theory, Mathematics Part B and the Mathematics and Philosophy and Mathematics and Statistics joint schools; Thursday 14 June 2007, 9.30am–11.15am. The complete four-page source is privately transcribed from original Part B bundle pages 61–64, supplied through the past-papers disclosure. No exact worked-answer advertisement was found in the bounded availability check. Source coding uses the positive-probability source support. Logarithms and information quantities are in base two unless indicated otherwise.

Communication Theory, Mathematics Part B and the corresponding joint schools; Thursday 12 June 2008, 9.30am–11.15am. The complete three-page source and intact cover are preserved in a private editable transcription from original Part B bundle pages 127–129, supplied through the past-papers disclosure. No exact worked-answer advertisement was found in the bounded availability check. All logarithms in these solutions are to base two unless another base is shown.

Communication Theory, Trinity Term; Thursday 18 June 2009, 9.30am–11.00am. This shared Part B paper was set for Mathematics, Mathematics and Computer Science, Mathematics and Philosophy, and Mathematics and Statistics. The full three-page source and editable transcription are retained privately. The source was supplied through the past-papers disclosure, in original Part B bundle pages 184–186. No exact worked-answer advertisement was found in the bounded check.

Communication Theory, Thursday 17 June 2010, 9.30am–11.00am. The complete four-page source was supplied through the past-papers disclosure, in original Part B bundle pages 244–247. The private editable transcription retains the complete cover and all three questions. No exact worked-answer advertisement was found in the bounded availability check.

Source paper: FOI request thread. The cover identifies Communication Theory, B11a, Friday 24 June 2011, 2.30pm to 4.00pm. Its four readable pages are original private Part B bundle pages 312–315.

Original solutions to the paper released at the source request. The complete editable transcription is retained in the private examination archive.

Source: Mathematics release, bundle Part C 2007 11.pdf, pages 411–412. The Mathematics Part C paper was sat on 6 June 2011, 2.30–4.00pm. Its printed historical code is C2.2b.

The department's answer-release policy excludes ordinary odd years. Bounded exact-paper checks found no matching advertised answers, so all nine printed parts and their unnumbered requests are answered.

Source: released examination bundle, Part C 2007 11.pdf, pages 457–460. All three questions are covered. No mark allocations are printed.

Source release: Oxford examination archive. The cover dates this examination to 17 June 2011, 9.30–11.00am. The unlettered requests in Question 1 are covered together in its parent Solution, with separate Solutions for its two numbered interval tests. Questions 2 and 3 each have one complete Solution.