यदि \(A=\{x,y\}\) है तो (\mathcal{P}(A)) में कौन सा तत्व अवश्य होगा?
If \(A=\{x,y\}\) then which element must be in (\mathcal{P}(A))?
Explanation opens after your attempt
Correct Answer
B. ({x})
Concept
({x}) is a subset of (A) so it is an element of (\mathcal{P}(A)). A power set contains subsets not direct elements.
Why this answer is correct
The correct answer is B. ({x}). ({x}) is a subset of (A) so it is an element of (\mathcal{P}(A)). A power set contains subsets not direct elements.
Exam Tip
({x}) (A) का उपसमुच्चय है इसलिए यह (\mathcal{P}(A)) का तत्व है। घात समुच्चय में सीधे तत्व नहीं बल्कि उपसमुच्चय आते हैं।
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