1.Describe set A
2.Describe set B
3. What is A U B?
4.What is A Π B?
5.What is the cardinality of A? B? A U B?
2.Describe set B
3. What is A U B?
4.What is A Π B?
5.What is the cardinality of A? B? A U B?
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Answer:
1. Numbers counted by 5.
2. Numbers counted by 10.
3. { 5, 10, 15,20, 25, 30,35, 40, 50, 60, 70}
4. {10, 20, 30}
5. n(A)= 7 n(B)= 7 n(AUB)= 11