Question

CAP-2018)
If A = [3, 6, 9, 12, 15. 18. 21). B = 14, 8, 12, 16, 20). then check whether AUB=BUA
and A - B = B-A.
(AP-2017)
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Answer 1

Answer:

First condition satisfied

But second one did not as value of only set A is not equal to set B