Two sets of questions, differentiated by paper, for learners to complete. Plus answers.
Counting has always been on Foundation, so quite easy for learners.
Sophisticated counting strategies are new to the GCSE higher tier. The specs say:
apply systematic listing strategies, including use of the product rule for counting (i.e. if there are m ways of doing one task and for each of these, there are n ways of doing another task, then the total number of ways the two tasks can be done is m × n ways)
Hence also suitable for revision at A Level Statistics.
All questions follow the format of 2017 exams across the boards, and the SAMs and Mocks available.