I remember most of these from reading Programming Pearls years ago so a lot of them came back from that, but a big hint to completing these is that the correct answer in this multiple-choice setup is usually the only one that is grammatically correct for the sentence. It would be more of a test for the unfamiliar readers if more of the "wrong" answers read like they could be correct.<p>Otherwise, fun to see these again! My favorite that was not included here (from memory): It's easier to make a 4" mirror then a 6" mirror, than it is to make a 6" mirror.