With a lifelong career in engineering, I spent the last 15 years teaching in a Florida high school. From time to time, students would ask questions that were not on the subject but needed to be answered. As my students prepared for graduation, I collected these topics, printed them out, and gave them as a graduation present. From time to time, I hear from my students, and they always tell me that they still have their graduation present. I share them with you here.
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