Cambridge IGCSE Additional Mathematics
11.1-11.3Permutations and combinations
Permutations and combinations in Cambridge IGCSE Additional Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic42 practice questions2 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 11.1Recognise the difference between permutations and combinations and know when to use each.
- 11.2Know and use n! and the expressions for permutations and combinations of n items taken r at a time.
- 11.3Solve arrangement and selection problems with permutations or combinations.
Lessons
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Combinations: selections where order does not matter
35 min
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Permutations: arranging objects in order
35 min
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Sample question
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