1.

If U = {1, 2, 3, 4, 5, 6}, A = {2, 3} and B = {3, 4, 5} then: (A) (A ∪ B)’ = {2, 3, 4, 5} (B) B – A = {4, 5} (C) A – B = {2, 4, 5} (D) (A ∪ B) = {3}

Answer»

Answer is (B)

B – A means B contains the element which is not present in A. 

Thus, B – A = {4, 5}



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