“Another one-penny stamp increase!” I fumed as I stood in an enormous, meandering line for forty-five minutes to get a sheet of one hundred one-cent stamps. The line moved glacially, with tempers rising all around me. Finally I made it to the front and asked for ten sheets of one hundred. All of ten dollars. “Who needs one-penny stamps?” I shouted. “They’re free!” People burst into applause and clustered around me as I gave away this treasure. Within two minutes, everyone was gone, along with most of my stamps. It was one of the most satisfying moments of my life. Here is the exercise: find
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