Algebra-1

To find the complement of (A∪B), we need to first find the union of sets A and B, and then determine the elements in the universal set U that are not in this union.

Union (A ∪ B):

A∪B includes all elements that are in either set A or set B:

A∪B = {3, 5, 7, 9, 11} ∪ {1, 3, 4, 8, 9}

A∪B = {1, 3, 4, 5, 7, 8, 9, 11}