Concept explainers
Ones and twos (H). Show that the set of all real numbers between 0 and 1 just having l’s and 2’s after the decimal point in their decimal expansions has a greater cardinality than the set of natural numbers.
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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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