Which of the following is a union, given A=(1,2,3,4 ), B=(2,3,4,5), A∪B = (2,3,4), A∩B = (1,2,3), A∪B = (1,2,3,4), A∩B = (2,3,4), Which of the following is an intersection given A=(a,b,c,d,e,f ), B=(a,c,f,g,i,), A∪B = (b,d,g), A∪B = (a,b,c,d), A∪B = (a,c,f), All of the above, Which of the following is a disjoint set?, , , , , A is a proper subset of B. Which of the following is the representation of A⊆B?, , , , , Which of the following is an empty or null set?, , , , .

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