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CAIE IGCSE Mathematics Core C8.1.2 Calculate the Probability of a Single Event Questions

Practise Core CAIE IGCSE Mathematics by identifying the event outcomes, reading totals or regions from a display and using a total probability of 1 when an entry is missing.

Syllabus
2028–2030
Course
Mathematics 0580
Level
Core

Exam points

  • Identify the outcomes satisfying the event before placing their count over the total possible outcomes.
  • Read the required region or category from a Venn diagram, table or grouped-data display before forming a single-event probability.
  • Use a total probability of 1 to recover a missing entry before calculating the requested event.

CAIE IGCSE Mathematics Core C8.1.2 Calculate the Probability of a Single Event Questions question 1

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Figure for Question CAIE IGCSE Mathematics Core C8.1.2 Calculate the Probability of a Single Event Questions question 1 — CAIE IGCSE Mathematics Core

There are 110 people in a group.
G={people who own gold jewellery}G=\{\text{people who own gold jewellery}\}S={people who own silver jewellery}S=\{\text{people who own silver jewellery}\}
18 people own both gold jewellery and silver jewellery.
46 people own gold jewellery.
11 people own no gold jewellery and no silver jewellery.

One of the 110 people is chosen at random.

Write down the probability that this person owns gold jewellery but not silver jewellery.

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