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Daily Lesson
Learn with Numbo
Day 3 · Set Operations: Union, Intersection, Difference, Complement
Today let's learn about set operations!
One step at a time
4 learning moments
Let's explore today's lesson
Union (A ∪ B) is the set of members in A or B (or both)! If A={1,2,3} and B={3,4,5}, then A∪B={1,2,3,4,5}.
Intersection (A ∩ B) is the set of members in both A and B! A∩B = {3} from the example above.
Difference (A - B) is the members in A but not in B! A-B = {1,2} from the example above.
Activity: If A={2,4,6,8} and B={4,8,12}, find A∪B, A∩B, and A-B.
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