Which count the story asks for

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• 7 sections of explanation, worked examples and diagrams
• 1 practice task with hints and worked answers
• A quiz that marks itself as you go
• Your progress kept across every subject you take

Other lessons in this sub-strand

1. Factorial notation
2. Simplifying factorial quotients
3. Permutations
4. A full line, and one fixed place
5. Combinations
6. From a group to its orders
7. Which count the story asks for
8. Choose a group, then arrange it