यदि \(U=\{1,2,3,4\}\) और \(A=\emptyset\) है तो (\mathcal{P}(A')) में कितने तत्व होंगे?
If \(U=\{1,2,3,4\}\) and \(A=\emptyset\), how many elements will be in (\mathcal{P}(A'))?
Explanation opens after your attempt
Correct Answer
D. (16)
Concept
When \(A=\emptyset\), (A'=U). Here (U) has (4) elements so the power set has \(2^4=16\) elements.
Why this answer is correct
The correct answer is D. (16). When \(A=\emptyset\), (A'=U). Here (U) has (4) elements so the power set has \(2^4=16\) elements.
Exam Tip
जब \(A=\emptyset\) हो तो (A'=U) होता है। यहां (U) में (4) तत्व हैं इसलिए \(2^4=16\) तत्व मिलेंगे।
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