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For any set A, (A’) is equal to A. A’ B. A C. φ D. none of these |
Answer» Here, Question is (A')' = ? Now, A'=U∖A ⇒(A' )' = (U∖A)' = U'∖A' ⇒(A' )' = U'∖(U∖A) ⇒(A' )' = ϕ∖U+A ⇒(A' )' = A |
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