Given the complete set u = a ∪ B = {x ∈ n | 0 ≤ x ≤ 10}, a ∩ (cub) = {1,3,5,7}, try to find the set B

Given the complete set u = a ∪ B = {x ∈ n | 0 ≤ x ≤ 10}, a ∩ (cub) = {1,3,5,7}, try to find the set B

U = a ∪ B = {0,1,2,3,4,5,6,7,8,9,10}. ∩ (cub) = {1,3,5,7}, element 1,3,5,7 belongs to set a, 1.3.5.7 also belongs to the complement of set B, that is, Cub = {1,3,5,7}, which means that set B does not contain 1.3.5.7, so set B should be contained in all complete sets except 1.3.5.7