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CAIE IGCSE Mathematics Core C8.3.1 Calculate the Probability of Combined Events Using Where Appropriate Questions

Practise Core CAIE IGCSE Mathematics by representing combined events with diagrams, multiplying and adding probabilities, and using complements for at-least-one or not-both outcomes.

Syllabus
2028–2030
Course
Mathematics 0580
Level
Core

Exam points

  • Represent combined events with sample-space, Venn or tree diagrams and identify the relevant outcomes.
  • Calculate probabilities of combined events by adding or multiplying branch and outcome probabilities, including with replacement.
  • Use complements or mutually exclusive cases to find probabilities such as at least one, either/or, or not both.

CAIE IGCSE Mathematics Core C8.3.1 Calculate the Probability of Combined Events Using Where Appropriate Questions question 1

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Table for Question CAIE IGCSE Mathematics Core C8.3.1 Calculate the Probability of Combined Events Using Where Appropriate Questions question 1 — CAIE IGCSE Mathematics Core

A spinner has five sides.
Each side is painted red, blue, green, yellow or orange.
The table shows some of the probabilities of the spinner landing on each colour.

Dan spins the spinner once.

Find the probability that the spinner lands on red or blue.

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