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Edexcel A-Level Mathematics AS S1.3.4 Sum and Product Laws Questions

Practise applying sum and product laws with tree diagrams, Venn diagrams and sampling with or without replacement.

Syllabus
First assessment 2019
Course
Mathematics YMA01
Level
AS

Exam points

  • complete tree diagrams using branch probabilities from the wording
  • calculate at least one or exactly one outcomes using products and complements
  • apply replacement or non-replacement rules when multiplying branch probabilities

Edexcel A-Level Mathematics AS S1.3.4 Sum and Product Laws Questions question 1

[Maximum number: 4]

The histogram shows the times taken, in seconds, by each of 260 people to complete a puzzle.

Figure for Question Edexcel A-Level Mathematics AS S1.3.4 Sum and Product Laws Questions question 1 — Edexcel A-Level Mathematics AS

Estimate the probability that all 3 of their times are less than 36 seconds.

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