Question

Find A n B if A={3,6,9,12} and B={2,4,6,8,10,12}

Answer 1

{6} is the answer, as best I can tell

Answer 2

A ∩ B = {3, 6, 9, 12} ∩ {2, 4, 6, 8, 10, 12}
= {6, 12}