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Question

(iii) A ∪ (B ∪ C) = (A ∪ B) ∪ (A ∩ C)

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Solution

Given: A = {1,2,3,4}, B = {2,4,6,8}, C = {3,4,5,6} and U = x|xN, xN, x<10

We have to verify the following property:

ABC=ABACLHS: ABCHere, BC={2,3,4,5,6,8}Then ABC={2,3,4}RHS: ABACHere, AB={2,4} and AC={3,4}Then ABAC={2,3,4}LHS=RHSHence, ABC=ABAC

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