Math Problem Statement
✓. Define countable sets. Prove or disprove that the set \ x in mathbb R | 1 <= x <= 2 \ is countable where R is the set of all real numbers.
Solution
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Math Problem Analysis
Mathematical Concepts
Set Theory
Real Numbers
Countability
Formulas
-
Theorems
Cantor's Diagonalization Argument
Cardinality Theorems
Suitable Grade Level
Undergraduate Level
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