1What does it mean for a set to be well defined, and why does it matter?
2Explain the difference between equal sets and equivalent sets, with an example of each.
3Why is the empty set not the same as {0}?
4List all the subsets of {a, b, c} and explain why a set with n elements has 2 to the power n subsets.
5When would you use the listing method and when the description method?