यदि \(A={\varnothing,{1},2}\), तो कौन सा (\mathcal{P}(A)) का तत्व नहीं है?
If \(A={\varnothing,{1},2}\), which one is not an element of (\mathcal{P}(A))?
Explanation opens after your attempt
Correct Answer
C. ({1,2})
Concept
({1,2}) contains (1), but (1) itself is not an element of (A). Elements of a power set are always subsets of the original set.
Why this answer is correct
The correct answer is C. ({1,2}). ({1,2}) contains (1), but (1) itself is not an element of (A). Elements of a power set are always subsets of the original set.
Exam Tip
({1,2}) में (1) है, लेकिन (1) स्वयं (A) का तत्व नहीं है। घात समुच्चय के तत्व हमेशा मूल समुच्चय के उपसमुच्चय होते हैं।
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