Find the indicated intersection or union.Let A = {4, 9, 11, 17, 21} and B = {9, 17, 21, 30}. Write the set A ? B.
A. {9, 17, 21}
B. {9, 17, 21, 30}
C. {4, 9, 11, 17, 21, 30}
D. {4, 9, 17, 21}
Answer: A
Mathematics
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A. 
B. 
C. 
D. 
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A. (-?, -3) or (3, ?) B. (-3, 2) or (3, ?) C. (-?, -3) or (2, 3) D. (-3, 2) or (2, 3)
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A. 
B. 
C. z + 5
D. 
Mathematics