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Union of Sets

Please explain in detail. Thank you

Use U = universal set={0, 1,2,3,4,5,6,7,8,9}, A={1,2,3,5,8,} B={2,3,5,7,} C={1,4,9} to findthe set.

1. B u C
2. A u C
3. A intersect B
4. A intersect C
5.(A intersect B) u C
6.(B u C) intersect A

7 B line on top of B
8.Line on top of A U B
9.Line on top of A intersect C