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\(U\) \(=\) 122,121,120,119,118,17,18,19, \(R\) \(=\) 120,119,118,18 மற்றும் \(S\) \(=\)121,119,118,17, எனில் \((R\cup S)^{\prime}\) \(=\) \(R^{\prime} \cap S^{\prime}\)என நிரூபிக்க .
 
விடை :
\(R \cup S\) \(=\)
,  \((R \cup S)^{\prime}\) \(=\)
 
\(R^{\prime}\) \(=\)
,  \(S^{\prime}\) \(=\)
 
\(R^{\prime} \cap S^{\prime}\) \(=\)
Answer variants:
122,121,17,19
120,119,118,18
121,119,118,17
122,19
122,120,18,19
121,120,119,118,17,18