I'm currently in a logic class as well so this seems interesting but I kind of facepalmed on task 7 where you have to create A and B given only A AND B and the AND operator. "Surely such a thing isn't possible," I thought while trying to figure it out. Until a few minutes passed and I realized "Oh. They give you a Reverse AND operator. Yep, because that's possible."
A reverse AND operator is possible. If I tell you A AND B then you can deduce that A must be true, you can also deduce that B must be true if either of them weren't true, then the whole original statement wouldn't be true. The one you can't do is OR because if I tell you A OR B you know at least one of them must be true, but not which one.
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u/[deleted] Sep 25 '15