NCERT Exercise 1.5 Q1 - Sets

Question: U={1,2,3,4,5,6,7,8,9}, A={1,2,3,4}, B={2,4,6,8}, C={3,4,5,6}. Find A', B', (A union C)', (A union B)', (A')', and (B-C)'.

Answer: A'={5,6,7,8,9}; B'={1,3,5,7,9}; (A union C)'={7,8,9}; (A union B)'={5,7,9}; (A')'=A; (B-C)'={1,3,4,5,6,7,9}.

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