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34 votes
34 votes
If A = {4, 7, 10, 13, 17) and B = {3, 5, 7, 9), then which of the following statements Is true?

BCA
AUB=(7)
BCB

If A = {4, 7, 10, 13, 17) and B = {3, 5, 7, 9), then which of the following statements-example-1
User Gerson Malca Bazan
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1 Answer

20 votes
20 votes
The answer is the last one.

B isn’t a proper subset of A because A doesn’t have elements 3, 5, and 9. A U B = {4, 7, 10, 13, 17, 3, 5, 9}, not {7}. Only B is a subset of B is true because every set is a subset of itself.
User Ahmed Akrout
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