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{1,2,3,5,6,7,9,10,11,13,15,16}
Let's rewrite the set X as a set of all integers that are odd and less than 16. X&={1,3,5,7,9,11,13,15} Y&={2,6,9,10,16} The union of two sets is the set that contains all elements found in both sets. Therefore, the union of X and Y holds all elements that are in both X and Y. Note that a union only contains unique values, so if any elements exist in both sets, we will cross out the duplicates. X&={1,3,5,7, 9,11,13,15} Y&={2,6,9,10,16} X ⋃ Y &={1,2,3,5,6,7,9,10,11,13,15,16}