Answer
$J U L = {2, 4, 5, 6, 7, 8, 10}$
Work Step by Step
$J = {4, 5, 6, 7}$
L = {x | x is even, whole, less than 12}
$L = {2, 4, 6, 8, 10}$
$J U L = {2, 4, 6, 8, 10, 4, 5, 6, 7}$
$J U L = {2, 4, 5, 6, 7, 8, 10}$
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