Massachusetts Institute of Technology: Srini Devadas and Eric Lehman's "Counting I"

Revisit Section 2, "Two Basic Counting Rules," of the reading to reinforce your understanding of the counting rules, focusing on 2.1: "The Sum Rule" and 2.2: "The Product Rule."

Click https://s3.amazonaws.com/saylordotorg-resources/wwwresources/site/wp-content/uploads/2011/09/CS202-Counting-1.pdf link to open resource.