Answer
$J U K = {1, 4, 5, 6, 7, 10}$
Work Step by Step
$J = {4, 5, 6, 7}$
$K = {1, 4, 7, 10}$
$J U K = {4, 5, 6, 7, 1, 4, 7, 10}$
$J U K = {1, 4, 5, 6, 7, 10}$
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