#2: give verbal descriptions -- it's not enough to say "a bunch of rationals": there's a pattern! Look for pattern! Also notice that two sets are finite: distinguish between finite and infinite sets by the ellipses.
What are the rules? (problems 6-8, 13)
#20: Not enough to say "both are infinite" -- they must both be in 1-1 correspondence
#37: as we said, the answer could be anywhere from 0 to infinite! That's why it's called a conundrum.
Next exam for the 16th of April. It will cover chaos, infinity, and logic.
New assignment:
Fri
4/9
More on The Logic Game
Continue working on your logic exercises, which are due Monday, 4/12.
Assignment for next Friday (yes, same time as your exam!): on Monday I will return your proposals: you need to revise those, and refine them, and resubmit them (with the original proposal) on Friday, 4/16.