(\mathcal{P}(\mathcal{P}({a}))) में कितने तत्व होंगे?
How many elements are there in (\mathcal{P}(\mathcal{P}({a})))?
Explanation opens after your attempt
B. (4)
Concept
(\mathcal{P}({a})) has (2) elements. Therefore its power set has \(2^2=4\) elements.
Why this answer is correct
The correct answer is B. (4). (\mathcal{P}({a})) has (2) elements. Therefore its power set has \(2^2=4\) elements.
Exam Tip
(\mathcal{P}({a})) में (2) तत्व होते हैं। इसलिए उसके घात समुच्चय में \(2^2=4\) तत्व होंगे।
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