यदि \(A=\{x,y,z\}\) है, तो (\mathcal{P}(\mathcal{P}(A))) में कितने singleton members होंगे?
If \(A=\{x,y,z\}\), how many singleton members are in (\mathcal{P}(\mathcal{P}(A)))?
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B. (8)
Simple Explanation
(\mathcal{P}(A)) में \(2^3=8\) सदस्य हैं, इसलिए उसके power set में singleton members भी (8) होंगे। परीक्षा में singleton members की संख्या base set की cardinality के बराबर होती है। / (\mathcal{P}(A)) has \(2^3=8\) members, so its power set has (8) singleton members. In exams, the number of singleton members equals the cardinality of the base set.
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