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प्रश्न
Which of the following is true?
विकल्प
A – B = A ∩ B
A – B = B – A
(A ∪ B)’ = A’ ∪ B’
(A ∩ B)’ = A’ ∪ B’
उत्तर
(A ∩ B)’ = A’ ∪ B’
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