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Set Theoryeasy
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A café serves a set of hot drinks H={tea, coffee, cocoa}H = \{\text{tea, coffee, cocoa}\}H={tea, coffee, cocoa} and a set of iced drinks I={iced tea, iced coffee, lemonade}I = \{\text{iced tea, iced coffee, lemonade}\}I={iced tea, iced coffee, lemonade}. If a customer wants to see the complete list of all drinks offered by the café, which set operation should be used to combine these menus?