Question

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Answer 1

Explanation:

`W`∩
`X` is asking for the intersection of sets
`W` and
`X`, or simply, which numbers can be found in both sets.

The numbers shared between the two sets are
`3, 4, 5`.

Next, we need to union this result with the set
`Y`, or simply, combine the numbers in both sets together.

This would result in
`2, 3, 4, 5`