Several of the quizzes were mis-numbered when I handed them out. Sometimes I did not correct this until after I had already done the next quiz. For that reason, there are quizzes 23a and 23b, and 27a and 27b. All the PDF files here have the correct numbers. If you want to check these quizzes against your grades, make sure you refer to the quiz number here.
Here are the Quizzes:
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