Permutations and combinations
5.2What the syllabus asks of you
- understand the terms permutation and combination, and solve simple problems involving selections
- solve problems about arrangements of objects in a line, including those involving – repetition (e.g. the number of ways of arranging the letters of the word ‘NEEDLESS’) – restriction (e.g. the number of ways several people can stand in a line if two particular people must, or must not, stand next to each other).
Read the notes first
Chapter 24: Permutations and combinations
Drill this topic
All 93 questions on Permutations and combinations, untimed — answer on paper, then mark yourself against the mark scheme.
Make a worksheet
Choose the years and how many questions, then print it with the answers on separate pages.
93 questions
These are structured questions, answered in working rather than by picking an option, so they are not listed here one by one. The drill above puts each in front of you with its mark scheme to check against.