Multiple choice general knowledge math & puzzles

A = {a, b, c, e, g} and B = {a, d, e} Find: A U B

  1. {a,c,d,g}

  2. {a,e}

  3. {a}

  4. {a,b,c,d,e,g}

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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.