यदि \(A=\{2,5,7\}\) है तो (n(\mathcal{P}(A))) कितना होगा?
If \(A=\{2,5,7\}\) then what is (n(\mathcal{P}(A)))?
Explanation opens after your attempt
Correct Answer
C. (8)
Concept
Set (A) has (3) elements so its power set has \(2^3=8\) elements. Remember (n(\mathcal{P}(A))=2^{n(A)}) for exams.
Why this answer is correct
The correct answer is C. (8). Set (A) has (3) elements so its power set has \(2^3=8\) elements. Remember (n(\mathcal{P}(A))=2^{n(A)}) for exams.
Exam Tip
(A) में (3) तत्व हैं इसलिए घात समुच्चय में \(2^3=8\) तत्व होंगे। परीक्षा में (n(\mathcal{P}(A))=2^{n(A)}) याद रखें।
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