IB Math AI HL · 2021 to 2025

4.6 Venn diagrams, trees and combined events

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HL archive · 2021 to 2026

4.6 Venn diagrams, trees and combined events

Latest exam session: May 2026

questions
questions
papers
papers
exam sessions
exam sessions
By year5micro-topics

Micro-topics in 4.6 Venn diagrams, trees and combined events

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

  • 5

    4.6.1

    Venn diagrams

    9 questions · in 5% of papers

    Less common

    last May 23 P1 TZ2

  • 11

    4.6.2

    Tree diagrams

    14 questions · in 11% of papers

    Occasional

    last May 26 P2 TZ1

  • 8

    4.6.3

    Combined events and independence

    5 questions · in 8% of papers

    Occasional

    last May 26 P2 TZ3

  • 14

    4.6.4

    Counting combined outcomes

    11 questions · in 14% of papers

    Occasional

    last May 26 P1 TZ2

  • 21

    4.6.5

    Conditional probability

    14 questions · in 21% of papers

    Regular

    last May 26 P1 TZ3

Exam pattern

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

Does it repeat?

Top 4 of 5 micro-topics for the next sitting. Numbers are questions per year.

fewermore

Micro-topic202120222023202420252026
4.6.5Conditional probabilityRegular
2Conditional probability, 2021: 2 questions4Conditional probability, 2022: 4 questions4Conditional probability, 2023: 4 questions1Conditional probability, 2024: 1 question·Conditional probability, 2025: 0 questions3Conditional probability, 2026: 3 questions
4.6.4Counting combined outcomesOccasional
2Counting combined outcomes, 2021: 2 questions2Counting combined outcomes, 2022: 2 questions·Counting combined outcomes, 2023: 0 questions3Counting combined outcomes, 2024: 3 questions2Counting combined outcomes, 2025: 2 questions2Counting combined outcomes, 2026: 2 questions
4.6.3Combined events and independenceOccasional
1Combined events and independence, 2021: 1 question·Combined events and independence, 2022: 0 questions1Combined events and independence, 2023: 1 question·Combined events and independence, 2024: 0 questions1Combined events and independence, 2025: 1 question2Combined events and independence, 2026: 2 questions
4.6.2Tree diagramsOccasional
1Tree diagrams, 2021: 1 question2Tree diagrams, 2022: 2 questions4Tree diagrams, 2023: 4 questions2Tree diagrams, 2024: 2 questions2Tree diagrams, 2025: 2 questions3Tree diagrams, 2026: 3 questions

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  • Regularin roughly one paper in six or more
  • Occasionalin about one paper in ten

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Questions on 4.6 Venn diagrams, trees and combined events, by exam session

Which papers asked about 4.6 Venn diagrams, trees and combined events, and which question numbers. Open a paper to see them highlighted.

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Frequently asked questions

Short answers about this page.

Which Math AI HL exam sessions are covered for 4.6 Venn diagrams, trees and combined events?

12 exam sessions from 2021 to 2026, the latest May 2026. Every Paper 1, 2 and 3 in every timezone is read and classified in full, which gives 24 papers in this archive.

Which 4.6 Venn diagrams, trees and combined events topic comes up most?

Conditional probability (4.6.5): in 21% of papers, last seen May 26 P1 TZ3. Usually "Find", worth about 2.4 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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