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14. Determine the complement of union and intersection

U = \{12, 13, 14, 15, 16, 17, 18, 19, 20\}

A = \{12, 13, 14, 15\}

and

B = \{13, 15, 17, 19\}

{(A \cap B)}^{'}

\(=\)

\{i, i, i, i, i, i, i\}

(Note: Insert the answer in ascending order.)

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