Answer: 2ⁿ.
- A 2ⁿ
- B n²
- C 2n
- D n!
Correct answer: A. 2ⁿ
Explanation: Each element is either in or out of a subset, giving 2ⁿ subsets.
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