Consider the set = Is 2 € A? Is 7 € A? Is {2,4,5} = A? Is {2,4,5} = A? Is ØE A? Is Ø A? {{2,4,5}, 3, 7}. Answer the following questions. What is the cardinality of A?
Consider the set = Is 2 € A? Is 7 € A? Is {2,4,5} = A? Is {2,4,5} = A? Is ØE A? Is Ø A? {{2,4,5}, 3, 7}. Answer the following questions. What is the cardinality of A?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:### Set Theory Quiz
Consider the set \( A = \{ \{2, 4, 5\}, 3, 7 \} \). Answer the following questions.
1. Is \( 2 \in A \)?
2. Is \( 7 \in A \)?
3. Is \(\{2, 4, 5\} \in A \)?
4. Is \(\{2, 4, 5\} \subseteq A \)?
5. Is \(\emptyset \in A \)?
6. Is \(\emptyset \subseteq A \)?
7. What is the cardinality of \( A \)?
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