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Mathematics for IGCSE & O level - Sets (Section 1 - No. 12)

Which of the following is equivalent to the set (A ∩ B)'?
A' ∪ B'
A' ∩ B'
(A ∪ B)'
(A - B) ∪ (B - A)

説明

By De Morgan's law, (A ∩ B)' = A' ∪ B'.

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