I have a question about a) the subset in general and b) the explanation for question 20. What does a subset mean? In addition, the explanation came up with three possibilities, and I don't quite understand them (like 'in A and B', 'B but not A'.)
Screenshot 2022-11-13 at 20.15.21.png Thanks a lot!
Hi! I don't understand why it's 6 gold pirates and not 7 if there are 7 numbers on the number line...? It's not like the separators a, b, and c will be placed between the numbers, or will they? But I do understand why it's 4 pirates. Thanks!
@spaceblastxy1428 Hi there, since this doesn't give away the solution, I'll answer here. 🙂 The question was written with the intention of not having rotational symmetry. Pretend the chairs are numbered from \(1\) to \(6,\) so that if you rotate a seating arrangement, then it's considered a new arrangement. We can clarify this in the question statement. Thanks for asking!