Answer: 8.
- A 3
- B 6
- C 8
- D 9
Correct answer: C. 8
Explanation: Power set has 2<sup>n</sup> elements. Here n = 3, so |P(A)| = 2<sup>3</sup> = 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