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Ta có:
\(C^{A}_{E}=E\setminus A=\left\{ {5,6,7,8,9} \right\}\)
\(C^{B}_{E}=E\setminus B=\left\{ {1,3,5,7,9} \right\}\)
\(C^{A\cup B}_{E}=E\setminus (A\cup B)=\left\{ {5,7,9} \right\}\)
\(C^{A}_{E}\cap C^{B}_{E}=\left\{ {5,6,7,8,9} \right\}\cap \left\{ {1,3,5,7,9} \right\}=\left\{ {5,7,9} \right\}\).
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