The sets are $\"\"$ , $\"\"$ and $\"\"$ .

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$\"\"$ = The union of two sets A and B is the set of elements in A or B (or both).

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$\"\"$

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$\"\"$ = The intersection of two sets A and B is the set of elements common to both A and B.

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$\"\"$

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a) $\"\"$

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b) $\"\"$

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c) $\"\"$

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d) $\"\"$

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$\"\"$

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$\"\"$

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e) $\"\"$

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$\"\"$

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$\"\"$

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f) $\"\"$

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$\"\"$

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$\"\"$

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g) $\"\"$

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$\"\"$