Use the Venn diagram below to find
We see the label 𝑈 is indicating
the rectangle, the largest box. Both 𝑋 and 𝑌 are located inside
𝑈, and that means 𝑈 contains all of the values in the image.
You would include three and six,
two and nine, as well as eight, one, and seven. The set of all values included in
𝑈 is three, six, two, nine, eight, one, seven.