# Topic Questions: 4.2 Understand and work with arithmetic sequences and series, including the formula for the th term and the sum of a finite arithmetic series; the sum of the first n natural numbers. — WMA12 Sequences and series > 48 WMA12 Sequences and series topic questions (125 marks) on 4.2 Understand and work with arithmetic sequences… — 22 papers, 2019–2026. Open the exact… - Canonical HTML: https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-2-wma12/sequences-and-series/4-2-understand-and-work-with-arithmetic-sequences-and-series-including-the-formula/ - Markdown mirror: https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-2-wma12/sequences-and-series/4-2-understand-and-work-with-arithmetic-sequences-and-series-including-the-formula/index.md --- Edexcel IAL · Mathematics · WMA12 · Sequences and series 48 WMA12 Sequences and series topic questions are tagged to this syllabus point across 22 papers (2019–2026). Only the parts whose knowledge graph matches this syllabus statement are counted, and the table shows which parts of each question are involved. - 48 topic questions - 22 papers - 125 tagged marks - 28.2% of topic questions - 26.3% of topic marks - 2019–2026 - Syllabus 2018–current - [All WMA12 Sequences and series topic questions](https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-2-wma12/sequences-and-series/) - [All paper codes](https://www.examsci.com/topics/) Core finding **This Sequences and series syllabus point appears in 22 WMA12 papers across 2019–2026, contributing 48 topic questions and 125 marks.** The most recent appearance is WMA12/01 January 2026. That equals 28.2% of the 170 topic questions and 26.3% of the 475 marks tagged to Sequences and series. Only parts tagged to this subtopic are counted, so a four-part question can contribute one item and one part's marks. The table lists every matching question, its tagged parts and marks, with a link back to the paper page. Sessions are newest first, so the statement can be traced back through the full paper history. ## Topic questions by session Newest sessions first. Parts and marks count only the parts tagged to this subtopic; “x of y parts” shows how much of the question is tagged elsewhere. Select the paper cell to open the matching question on the paper page, or use **Go to Practice Hub** to answer that exact question in the Interactive Practice Hub. | Paper | Question | Type | Parts | Marks | Difficulty | Practice | | --- | --- | --- | --- | --- | --- | --- | | [**WMA12/01** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2026-january-wma12-01/#q-9) | **Q9** Arithmetic and Geometric Series - Edexcel IAL Pure Mathematics P2 January 2026 Q9 | FRQ | 2 of 4 parts ((a), (b)) | 5 of 10 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=1182ffcc-0637-4249-8567-434d1012571d&question_id=409dfb5b-eb81-43e7-8d1b-59faad113ad4&source_detail=WMA12%2F01+January+2026) | | [**WMA12/02** January 2026 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2026-january-wma12-02/#q-1) | **Q1** Arithmetic Series - Edexcel IAL P2 Jan 2026 Q1 | FRQ | 2 parts ((a), (b)) | 6 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e370653b-888f-434d-862f-65c74ceaf6f8&question_id=97a842d3-14f5-4fb6-897d-5d24a831c0eb&source_detail=WMA12%2F02+January+2026) | | [**WMA12/01** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2025-october-wma12-01/#q-1) | **Q1** Arithmetic Series - Edexcel IAL P2 October 2025 Q1 | FRQ | 2 parts ((a), (b)) | 4 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=fc9e4e85-cdf6-4e4f-94ce-f418100896fc&question_id=1e13bd51-c159-4a9c-891f-b39ec851831a&source_detail=WMA12%2F01+October+2025) | | [**WMA12/02** October 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2025-october-wma12-02/#q-9) | **Q9** Arithmetic and Geometric Sequences - Edexcel IAL P2 Oct 2025 Q9 | FRQ | 2 of 3 parts ((ii)(a), (ii)(b)) | 5 of 9 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=6b2cdbab-addf-4fb1-9b3d-de61de2d4fd7&question_id=ba7896ca-6ee5-444b-a1b8-b7fed2a5b0f2&source_detail=WMA12%2F02+October+2025) | | [**WMA12/01** June 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2025-june-wma12-01/#q-7) | **Q7** Sequences and Series - Edexcel IAL P2 2025 Jun Q7 | FRQ | 1 of 3 parts ((ii)) | 4 of 9 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=3b29e201-1087-4524-98b9-78457fbf55e9&question_id=4b3c84c5-90b8-4c9f-b2a5-7df90c670b0e&source_detail=WMA12%2F01+June+2025) | | [**WMA12/02** June 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2025-june-wma12-02/#q-5) | **Q5** Recurrence Relations and Series - Edexcel IAL P2 May 2025 Q5 | FRQ | 1 of 2 parts ((b)) | 4 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=5f7a54d4-4121-4b2f-887c-4556f663e8ca&question_id=32a16b09-e225-434d-9906-2e07a7d62bbd&source_detail=WMA12%2F02+June+2025) | | [**WMA12/01** January 2025 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2025-january-wma12-01/#q-1) | **Q1** Arithmetic Series - Edexcel IAL P2 Jan 2025 Q1 | FRQ | 2 parts ((a), (b)) | 4 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=6cd3c32e-52c6-43e8-813b-2d90c40e2016&question_id=d93d6c8a-88ae-4a6a-8a96-718645591947&source_detail=WMA12%2F01+January+2025) | | [**WMA12/01** October 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2024-october-wma12-01/#q-7) | **Q7** Arithmetic and Geometric Sequences - Edexcel IAL Pure Mathematics P2 October 2024 Q7 | FRQ | 2 of 3 parts ((a), (b)) | 3 of 6 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=6dfd4aa8-3174-4cde-9119-b49521b4b409&question_id=5ad88c2f-68bc-4746-bc1f-9725bb2df6b3&source_detail=WMA12%2F01+October+2024) | | [**WMA12/01** June 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2024-june-wma12-01/#q-2) | **Q2** Arithmetic Series - Edexcel IAL P2 May 2024 Q2 | FRQ | 2 parts ((a), (b)) | 7 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=db0de4f6-4b04-4261-96dd-b2b034be8e4b&question_id=093d0e33-6fd8-466a-94f3-13b6680e7ea1&source_detail=WMA12%2F01+June+2024) | | [**WMA12/02** June 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2024-june-wma12-02/#q-8) | **Q8** Sequences and Series - Edexcel IAL P2 2024 May Q8 | FRQ | 2 of 4 parts ((i)(a), (i)(b)) | 6 of 13 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=62e30710-9cc7-42ca-bf99-269350889283&question_id=f1dc5ec5-0d43-4f6b-959e-8d7ea0e0ae7b&source_detail=WMA12%2F02+June+2024) | | [**WMA12/01** January 2024 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2024-january-wma12-01/#q-7) | **Q7** Sequences Applications (Models A and B) - Edexcel IAL P2 Jan 2024 Q7 | FRQ | 2 of 3 parts ((a), (c)) | 6 of 9 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=a0493aa0-a6ae-4894-b7b6-3d80012a67a5&question_id=184cf081-7979-4e90-a7e8-70cd9bc8a2ed&source_detail=WMA12%2F01+January+2024) | | [**WMA12/01** October 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2023-october-wma12-01/#q-8) | **Q8** Arithmetic Sequences and Series - Edexcel IAL Pure Mathematics P2 October 2023 Q8 | FRQ | 4 parts ((a), (b), (c)(i), (c)(ii)) | 7 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=ea647e35-aee5-4abf-98b2-2fd1b40208a3&question_id=90ecfc0f-0ae7-436d-a7a8-b17b339bb528&source_detail=WMA12%2F01+October+2023) | | [**WMA12/01** January 2023 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2023-january-wma12-01/#q-3) | **Q3** Binomial Expansion and Arithmetic Progressions - Edexcel IAL P2 Jan 2023 Q3 | FRQ | 1 of 2 parts ((b)) | 3 of 7 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=00333ac2-68f8-4dc9-ab96-d583ac9e5d2a&question_id=9f55b2f1-b1a5-4c31-8f90-8a837ef62d0d&source_detail=WMA12%2F01+January+2023) | | [**WMA12/01** October 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2022-october-wma12-01/#q-3) | **Q3** Sequences and Trigonometric Summation - Edexcel IAL Pure Mathematics P2 October 2022 Q3 | FRQ | 1 of 2 parts ((b)) | 4 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=68ff7e5a-d114-4fa3-bc4f-dc6aadb51c92&question_id=abd7b19f-c32e-48e1-81f5-b107150fbd2e&source_detail=WMA12%2F01+October+2022) | | [**WMA12/01** January 2022 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2022-january-wma12-01/#q-8) | **Q8** Arithmetic and Geometric Progressions - Edexcel IAL P2 Jan 2022 Q8 | FRQ | 3 of 4 parts ((a), (b), (d)) | 7 of 9 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=181d8146-11ed-496e-b933-f1b210e805cb&question_id=f57b6642-906c-42ae-a8a2-4a738b3e58dc&source_detail=WMA12%2F01+January+2022) | | [**WMA12/01** October 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2021-october-wma12-01/#q-5) | **Q5** Arithmetic Series - Edexcel IAL P2 October 2021 Q5 | FRQ | 3 parts ((a), (b), (c)) | 6 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=93238783-dcf0-4ffd-8ca6-1528ee01fa97&question_id=999df440-8d3a-42a9-8719-bf166b197e3a&source_detail=WMA12%2F01+October+2021) | | [**WMA12/01** June 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2021-june-wma12-01/#q-1) | **Q1** Sequences and Series - Edexcel IAL Pure Mathematics P2 June 2021 Q1 | FRQ | 3 parts ((a)(i), (a)(ii), (b)) | 7 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=bb1224e2-2dbe-4d14-b02d-1157c50a7e7c&question_id=9596d664-2abd-4dbe-bafa-bce4490e64a5&source_detail=WMA12%2F01+June+2021) | | [**WMA12/01** January 2021 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2021-january-wma12-01/#q-10) | **Q10** Arithmetic and Geometric Series - Edexcel IAL P2 Jan 2021 Q10 | FRQ | 2 of 3 parts ((a), (c)) | 8 of 11 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=e17c04c8-1fad-49a0-bfca-b7b74e7807e4&question_id=37e196bf-7eed-47e8-84da-44e8dc1f682e&source_detail=WMA12%2F01+January+2021) | | [**WMA12/01** October 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2020-october-wma12-01/#q-5) | **Q5** Arithmetic Sequences and Series - Edexcel IAL P2 2020 May Q5 | FRQ | 5 parts ((a), (b), (c), (d), (e)) | 11 | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=448d93b4-63ac-4635-a05e-8d585589e39f&question_id=64e7dbb0-14b3-4a55-aa7f-f87e5cde3af4&source_detail=WMA12%2F01+October+2020) | | [**WMA12/01** January 2020 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2020-january-wma12-01/#q-8) | **Q8** Arithmetic Series Proof and Sequences - Edexcel IAL P2 Jan 2020 Q8 | FRQ | 2 of 3 parts ((i), (ii)(b)) | 6 of 7 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=79c9d77a-9dd2-498d-884a-7da7a3e5f7ed&question_id=71b5b3c3-f240-4166-a1be-4795cc5ab5d5&source_detail=WMA12%2F01+January+2020) | | [**WMA12/01** October 2019 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2019-october-wma12-01/#q-7) | **Q7** Laws of Logarithms and Series - Edexcel IAL Pure Mathematics P2 October 2019 Q7 | FRQ | 1 of 3 parts ((iii)) | 3 of 7 on the paper | Easy | [Go to Practice Hub](https://www.examsci.com/practice?set_id=68e61f2a-299a-4e1e-a4ae-a8de979c8029&question_id=3f388f77-3fbf-474d-bc79-aa30884ceb51&source_detail=WMA12%2F01+October+2019) | | [**WMA12/01** October 2019 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2019-october-wma12-01/#q-9) | **Q9** Trigonometric Equations and Sequences - Edexcel IAL Pure Mathematics P2 October 2019 Q9 | FRQ | 1 of 3 parts ((ii)(a)) | 3 of 12 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=68e61f2a-299a-4e1e-a4ae-a8de979c8029&question_id=429bbc0b-0ce6-40df-935d-cf4a8c96b080&source_detail=WMA12%2F01+October+2019) | | [**WMA12/01** June 2019 · Edexcel IAL](https://www.examsci.com/past-papers/edexcel-ial/mathematics/pure-mathematics-2-wma12/2019-june-wma12-01/#q-7) | **Q7** Arithmetic and Geometric Series - Edexcel IAL P2 2019 Jun Q7 | FRQ | 2 of 3 parts ((a), (c)) | 6 of 9 on the paper | Medium | [Go to Practice Hub](https://www.examsci.com/practice?set_id=9bc526e7-e2bc-45cd-a6db-300f067c3553&question_id=c8ec6f14-1356-4d43-aeb8-1f6979afda48&source_detail=WMA12%2F01+June+2019) | ## Related topic questions in Sequences and series - [4.1 Sequences, including those given by a formula for the nth term and those generated by a simple relation of the form $x_{n+1}=f(x_{n})$.](https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-2-wma12/sequences-and-series/4-1-sequences-including-those-given-by-a-formula-for-the-nth-term-and-those-generated/) — 28 question items · 14 papers — 68 marks · 2019–2026 - [4.3 Increasing sequences, decreasing sequences and periodic sequences.](https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-2-wma12/sequences-and-series/4-3-increasing-sequences-decreasing-sequences-and-periodic-sequences/) — 12 question items · 7 papers — 26 marks · 2019–2026 - [4.4 Understand and work with geometric sequences and series, including the formulae for the th term and the sum of a finite geometric series; the sum to infinity of a convergent geometric series, including the use of $|r|<1$](https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-2-wma12/sequences-and-series/4-4-understand-and-work-with-geometric-sequences-and-series-including-the-formulae/) — 54 question items · 23 papers — 156 marks · 2019–2026 - [4.5 Binomial expansion of $(a+bx)^{n}$ for positive integer n.](https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-2-wma12/sequences-and-series/4-5-binomial-expansion-of-a-bx-n-for-positive-integer-n/) — 45 question items · 24 papers — 148 marks · 2019–2026 ## Topic question rules and edge cases **How many topic questions cover this syllabus point?** 23 question stems cover this subtopic across 22 papers, but only 48 tagged parts and 125 marks belong to it. Other parts of the same questions are assessed under different statements and are excluded from this page. **Which papers include this subtopic?** The table lists every matching session from 2019–2026. Each row links to the question anchor on the paper page, where the full paper context and practice entry point are available. **Why can one question appear under several subtopics?** The parts of one question can assess different syllabus statements. Each part is counted under its own subtopics, so the same question stem can appear on several subtopic pages while each page lists only the parts and marks tagged to that statement. **Can I practise these questions with AI marking?** Yes. Open a paper from the table and use the Interactive Practice Hub entry point. The page itself is static HTML so search engines and retrieval agents can read the full question list without executing JavaScript. --- Full page with native tables, bar charts and Practice Hub links: https://www.examsci.com/topics/edexcel-ial/mathematics/pure-mathematics-2-wma12/sequences-and-series/4-2-understand-and-work-with-arithmetic-sequences-and-series-including-the-formula/