Unit 1: on 15 of 34 papers, 8–48 marks a paper (24 on average)
Read question by question: blind checks found 117 of 120 question parts tagged with the right topic (95% confidence interval 92.9–99.1%). “optional” marks a question the paper offers as a choice: a candidate answers only some of the questions offered.
Unit 1 · October 2017 · Q1 (b) · 3 marks, Q7 (a, b) · 4 marks, Q9 (a) · 6 marks · optional, Q10 (d, e) · 28 marks · optional — question paper and mark scheme
Unit 1 · January 2017 · Q5 (a, b) · 4 marks, Q7 (a, b) · 4 marks, Q9 (c, d) · 24 marks · optional, Q10 (d) · 14 marks · optional — question paper and mark scheme
Unit 1 · October 2016 · Q5 (b) · 3 marks, Q9 (d) · 10 marks · optional, Q10 (b, c, e) · 30 marks · optional — question paper and mark scheme