Fill in the blanks to make each of the following a true statement:
(i) A ∪ A′ = . . . (ii) φ′ ∩ A = . . .
(iii) A ∩ A′ = . . . (iv) U′ ∩ A = . . .
Answer
(i) A ∪ A′ = U (Universal set)
(ii) Φ′ ∩ A = U ∩ A = A
(iii) A ∩ A′ = Φ
(iv) U′ ∩ A = Φ ∩ A = Φ
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