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(Solved): please answer question 15 only 15. Prove that if \( A \) is a finite set and \( B \subseteq A ...
please answer question 15 only
15. Prove that if \( A \) is a finite set and \( B \subseteq A \) then \( B \) is a finite set of smaller cardinality than \( A \). 16. Let \( A=\{1,2,3\} \). For each relation given, draw a diagram to represent the relation. Use the dial