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CAIE 9618 Computer Science Paper 3 Advanced Theory Past Papers

Cambridge International (CAIE) AS & A Level 9618 Computer Science Paper 3 Advanced Theory: written paper, 75 marks, 90 minutes. 20 past papers from 2022 to 2025; 15 can be taken online.

Take a past paper online — free once

Open any series below, then choose “Take this paper online”.

Variants: one series has several variants (v1/v2/v3); the last digit of the paper number is the variant, e.g. Paper 31 = v1, Paper 32 = v2, Paper 33 = v3. The Feb/March series usually has v2 only. Variants contain different questions of similar difficulty.

All series

SeriesCodeMaxQsThresholds (min marks)Online
Oct/Nov 2025 v19618/31/O/N/25–––soon
Oct/Nov 2025 v29618/32/O/N/25–––soon
Oct/Nov 2025 v39618/33/O/N/25–––soon
May/June 2025 v19618/31/M/J/257512A 43 / C 28 / E 14online
May/June 2025 v29618/32/M/J/257513A 43 / C 29 / E 14online
May/June 2025 v39618/33/M/J/257513A 43 / C 28 / E 14online
Oct/Nov 2024 v19618/31/O/N/2475–A 49 / C 35 / E 23soon
Oct/Nov 2024 v29618/32/O/N/2475–A 55 / C 41 / E 27soon
Oct/Nov 2024 v39618/33/O/N/247511A 49 / C 35 / E 23online
May/June 2024 v19618/31/M/J/247511A 47 / C 33 / E 16online
May/June 2024 v29618/32/M/J/247511A 47 / C 33 / E 16online
May/June 2024 v39618/33/M/J/247511A 47 / C 33 / E 16online
Oct/Nov 2023 v19618/31/O/N/237512A 49 / C 34 / E 21online
Oct/Nov 2023 v29618/32/O/N/237512A 46 / C 31 / E 21online
Oct/Nov 2023 v39618/33/O/N/237512A 49 / C 34 / E 21online
May/June 2023 v19618/31/M/J/237512A 54 / C 39 / E 25online
May/June 2023 v29618/32/M/J/237511A 54 / C 39 / E 25online
May/June 2023 v39618/33/M/J/237512A 54 / C 39 / E 25online
Oct/Nov 2022 v29618/32/O/N/227511A 47 / C 32 / E 20online
Oct/Nov 2022 v39618/33/O/N/227512A 46 / C 31 / E 17online

Grade thresholds (average of latest 8 series)

Grade thresholds are the minimum raw marks published by the exam board for each series and variant. A single paper has grades A–E (A–G for IGCSE); A* is awarded only on the whole-subject total.

GradeABCDE
Min marks / 754840342720
Percent64%54%45%36%27%

Topic coverage (all verified papers)

19.1 Algorithms177 marks · 16%
13.1 User-defined data types132 marks · 12%
15.2 Boolean Algebra and Logic Circuits121 marks · 11%
13.3 Floating-point numbers, representation and manipulation86 marks · 8%
13.2 File organisation and access72 marks · 6%
20.1 Programming Paradigms71 marks · 6%
14.1 Protocols68 marks · 6%
18.1 Artificial Intelligence66 marks · 6%
15.1 Processors, Parallel Processing and Virtual Machines63 marks · 6%
16.1 Purposes of an Operating System (OS)54 marks · 5%
17.1 Encryption, Encryption Protocols and Digital certificates53 marks · 5%
20.2 File Processing and Exception Handling48 marks · 4%
14.2 Circuit switching, packet switching35 marks · 3%
16.2 Translation Software35 marks · 3%
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