If A, B and C are subsets of a Universal set, then which one of the following is not correct? Where A’ is the complement of A.

(A ∩ B) ∪ C = (A ∪ C) ∩ (B ∪ C)

A ∪ (B ∩ C) = (A ∪ B) ∩ (A ∪ C)

A’ ∪ (A ∪ B) = (B’ ∩ B)’ ∪ A’

A’ ∪ (B ∪ C) = (C’ ∩ B)’ ∩ A’

If A, B and C are subsets of a Universal set, then which one of the fo

1.	If A, B and C are subsets of a Universal set, then which one of the following is not correct? Where A’ is the complement of A.
A.	A ∪ (B ∩ C) = (A ∪ B) ∩ (A ∪ C)
B.	A’ ∪ (A ∪ B) = (B’ ∩ B)’ ∪ A’
C.	A’ ∪ (B ∪ C) = (C’ ∩ B)’ ∩ A’
D.	(A ∩ B) ∪ C = (A ∪ C) ∩ (B ∪ C)
Answer» D. (A ∩ B) ∪ C = (A ∪ C) ∩ (B ∪ C)

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