Multiple choice general knowledge math & puzzles A = {a, b, c, e, g} and B = {a, d, e} Find: A U B {a,c,d,g} {a,e} {a} {a,b,c,d,e,g} Reveal answer Fill a bubble to check yourself D Correct answer Explanation A U B combines all unique elements from both sets: {a, b, c, e, g} U {a, d, e} = {a, b, c, d, e, g}. Note that element 'a' appears in both sets but is only listed once in the union - this is a fundamental property of set operations.