Genia from Deer Park School thought hard about this problem:For this problem there are 3 possibilites to put two drums on the wheel with 6 circles on it.
Well done, Genia. Perhaps you have described your ways slightly differently to Genia but you should find if you are looking for DIFFERENT possibilities, then there are only three. Matt from Lincoln looked at having three drums on the wheel. He says:
You've described a very good way of approaching the problem, Matt. It's good to have some sort of system for finding all the ways so that you can check whether you've got them all. Matt thinks there are 15 different ways, but unfortunately you didn't say what they are, Matt. Perhaps you coud list them for us? Does anyone agree or disagree?