JEE MainHardQuestion 410007
Question
The number of subsets of a set with n elements is:
- A2ⁿCorrect
- Bn!
- Cn²
- D2n
Correct answer
2ⁿ
Explanation
Each element can either be included or excluded from a subset → 2 choices per element → 2ⁿ total subsets (including empty set and the set itself).