OpenStax, Contemporary Mathematics §1.4 Set Operations with Two Sets · Example 10 · Combinatorics · Sets & logic

Set Operations with Two Sets · Example 10

Don Woods is serving cake and ice cream at his Juneteenth celebration. The party has a total of 54 guests in attendance. Suppose 30 guests requested cake, 20 guests asked for ice cream, and 12 guests did not have either cake or ice cream.

(a) How many guests had cake or ice cream?
(b) How many guests had cake and ice cream?

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OpenStax, Contemporary Mathematics · §1.4 Set Operations with Two Sets · Example 10

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