यदि \(A=\{1,2\}\) और (B=\mathcal{P}(A)) है तो (n(B)) कितना होगा?
If \(A=\{1,2\}\) and (B=\mathcal{P}(A)), what is (n(B))?
Explanation opens after your attempt
Correct Answer
C. (4)
Concept
(A) has two elements, so (\mathcal{P}(A)) has \(2^2=4\) elements. (B) is that power set.
Why this answer is correct
The correct answer is C. (4). (A) has two elements, so (\mathcal{P}(A)) has \(2^2=4\) elements. (B) is that power set.
Exam Tip
(A) में दो तत्व हैं इसलिए (\mathcal{P}(A)) में \(2^2=4\) तत्व हैं। (B) वही घात समुच्चय है।
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