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# Let U be the universal set and A, B are subsets of U, A’ = U – A, B’ = U – B  If U = {1, 2, 3, 4, 5,...15}, A = {x / x = 3n, n $\in$ N, n $\leq$ 5}, B = {x / x = 2n, n $\in$ N, n $\leq$ 6}, A’ = _______ ?

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