Answer: 16.
- A 16
- B 8
- C 4
- D 12
Correct answer: A. 16
Explanation: The power set of an n-element set has 2ⁿ = 2⁴ = 16 members.
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