यदि \(A=\{1,2,3,4\}\) है, तो (\mathcal{P}(A)) के कितने members singleton sets हैं?
If \(A=\{1,2,3,4\}\), how many members of (\mathcal{P}(A)) are singleton sets?
Explanation opens after your attempt
Correct Answer
C. (4)
Concept
The singleton members are ({1},{2},{3},{4}), so the number is (4). In exams, \(\varnothing\) is not a singleton.
Why this answer is correct
The correct answer is C. (4). The singleton members are ({1},{2},{3},{4}), so the number is (4). In exams, \(\varnothing\) is not a singleton.
Exam Tip
Singleton members ({1},{2},{3},{4}) हैं, इसलिए संख्या (4) है। परीक्षा में \(\varnothing\) singleton नहीं होता।
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