CIE IGCSE Maths

Revision Notes

8.1.5 Combined Probability - Harder

What do I need to know?

  • Be aware of the basics, ie. tree diagrams, replacement, AND and OR, the sum of all probabilities is 1 (see Combined Probability – Basics)
  • Note that there may be some problem-solving and algebra involved (see question 2 of the Worked Example)

Worked Example

Combined Probability - Harder Worked Example 1, downloadable IGCSE & GCSE Maths revision notes

Combined Probability - Harder Worked Example 2

Harder Tree Diagram, IGCSE & GCSE Maths revision notes

Combined Probability - Harder Worked Example 3

Combined Probability - Harder Worked Example 4

Combined Probability - Harder Worked Example 5

Combined Probability - Harder Worked Example 6

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