11 Permutations and combinations

11.1 Recognise the difference between permutations and combinations and know when each should be used

11.1 Recognise the difference between permutations and combinations and kno11.1 Recognise the difference between permutations and combinations and know when each should be used when each should be used- pdf

11.2 Know and use the notation n! and the expressions for permutations and combinations of n items taken r at a time

11.2 Know and use the notation n! and the expressions for permutations and combinations of n items taken r at a time- pdf

11.3 Solve problems on arrangement and selection using permutations or combinations

11.3 Solve problems on arrangement and selection using permutations or combinations- pdf

11 Permutations and combinations- past paper

11 Permutations and combinations- past paper- 2025