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CAIE IGCSE Mathematics Core C8.1.3 Understand That the Probability of an Event Not Occurring 1 The Questions

Practise Core CAIE IGCSE Mathematics by subtracting an event probability from 1, recovering missing table entries and reporting complementary probabilities as fractions, decimals or percentages.

Syllabus
2028–2030
Course
Mathematics 0580
Level
Core

Exam points

  • Calculate P(not event) as 1 − P(event), giving the answer as a fraction, decimal or percentage.
  • Use complementary “not” information to recover an individual probability in a table or set.
  • Complete a probability table by subtracting known probabilities from 1 before sharing the remainder.

CAIE IGCSE Mathematics Core C8.1.3 Understand That the Probability of an Event Not Occurring 1 The Questions question 1

[Maximum number: 1]

There are 20 cars in a car park and 3 of the cars are blue.

One of the 20 cars is picked at random.

Find the probability that this car is not blue.

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