Concept explainers
Pile of packs. You walk into class late and notice a bunch of backpacks lying against one wall. How could you check to see if there’s a one-to-one correspondence between the backpacks and the students in the room? Is there a way to pair up each backpack with a student?
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Chapter 3 Solutions
The Heart of Mathematics: An Invitation to Effective Thinking, WileyPLUS NextGen Card with Loose-leaf Set Single Semester: An Invitation to Effective Thinking (Key Curriculum Press)
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