Answer: {2, 4, 6, 8}.
- A {2, 4, 6, 8}
- B {1, 3, 5, 7}
- C {2, 4, 6, 8, 10}
- D {4, 6, 8}
Correct answer: A. {2, 4, 6, 8}
Explanation: The even numbers between 1 and 9 are 2, 4, 6 and 8.
A Venn diagram makes set identities visual: A∪B is everything inside either circle, A∩B is only the overlap, and the region outside both circles represents the complement of their union - directly illustrating De Morgan's law (A∪B)′ = A′∩B′.
Concept context
Types of sets, operations (union/intersection/complement), relations, and types of functions with domain and range