IB Math AI HL · 2021 to 2025

1.2 Sequences and sigma notation

13 past paper questions from 3 papers across 3 exam sessions. See what repeats, then practise the same skills with AI marking.

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HL archive · 2024 to 2025

1.2 Sequences and sigma notation

Latest exam session: May 2025

questions
13
questions
papers
3
papers
exam sessions
3
exam sessions
micro-topics
2

Micro-topics in 1.2 Sequences and sigma notation

In syllabus order. The ring is the share of papers each appears in.

  • 4

    1.2.1

    Arithmetic sequences

    9 questions · in 4% of papersAppears in 2 of the 54 Math AI HL papers analysed (4%), at least once each.

    Less common

    last May 25 P2 TZ2

  • 2

    1.2.3

    Sigma notation

    4 questions · in 2% of papersAppears in 1 of the 54 Math AI HL papers analysed (2%), at least once each.

    Less common

    last May 24 P2 TZ2

Exam pattern

How often each micro-topic has been examined, year by year. Each label is explained under the grid.

Does it repeat?

Questions per year for each micro-topic.

fewermore

Micro-topic202120222023202420252026
1.2.1Arithmetic sequencesLess common
·Arithmetic sequences, 2021: 0 questions·Arithmetic sequences, 2022: 0 questions·Arithmetic sequences, 2023: 0 questions2Arithmetic sequences, 2024: 2 questions7Arithmetic sequences, 2025: 7 questions·Arithmetic sequences, 2026: 0 questions
1.2.3Sigma notationLess common
·Sigma notation, 2021: 0 questions·Sigma notation, 2022: 0 questions·Sigma notation, 2023: 0 questions4Sigma notation, 2024: 4 questions·Sigma notation, 2025: 0 questions·Sigma notation, 2026: 0 questions
  • Less commonin fewer than one paper in fifteen

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Questions on 1.2 Sequences and sigma notation, by exam session

Which papers asked about 1.2 Sequences and sigma notation, and which question numbers. Open a paper to see them highlighted.

  • May 2025

    1 question across 1 paper

  • November 2024

    1 question across 1 paper

  • May 2024

    1 question across 1 paper

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Frequently asked questions

Short answers about this page.

Which Math AI HL exam sessions are covered for 1.2 Sequences and sigma notation?

11 exam sessions from 2024 to 2025, the latest May 2025. Every Paper 1 and 2 in every timezone is read and classified in full, which gives 3 papers in this archive.

Which 1.2 Sequences and sigma notation topic comes up most?

Arithmetic sequences (1.2.1): in 4% of papers, last seen May 25 P2 TZ2. Usually "find / solve", worth about 9 marks in a paper that includes it.

Can I see the original question and mark scheme?

No. The wording belongs to the IB. You get the citation, the marks, the command term and the skill tested, plus our own matched practice questions with worked answers and AI marking.

What do "banker", "due" and "rising" mean?

Banker: examined in at least one sitting in four and still appearing. Due: regular before, but absent for the last two exam sessions. Rising: clearly more common in the last two years. Our classification of real papers, not an IB statistic.

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Reading this page and the exam pattern is free. A free account generates three sets of ten questions and launches one practice set. Pro opens every question in any scope, sets of twenty or all, and unlimited practice.

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