यदि \(A=\{{1},2\}\) है तो (n(\mathcal{P}(A))) कितना होगा?
If \(A=\{{1},2\}\), what is (n(\mathcal{P}(A)))?
Explanation opens after your attempt
C. (4)
Concept
Set (A) has two elements so its power set has \(2^2=4\) elements. Count elements carefully using brackets.
Why this answer is correct
The correct answer is C. (4). Set (A) has two elements so its power set has \(2^2=4\) elements. Count elements carefully using brackets.
Exam Tip
(A) में दो तत्व हैं इसलिए घात समुच्चय में \(2^2=4\) तत्व होंगे। अंदर के कोष्ठकों को देखकर तत्व गिनें।
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