यदि \(A=\{1,{2}\}\), तो (\mathcal{P}(A)) में कौन सा अवश्य होगा?
If \(A=\{1,{2}\}\), which must be in (\mathcal{P}(A))?
Explanation opens after your attempt
Correct Answer
B. ({{2}})
Concept
({2}) is an element of (A), so its singleton subset ({{2}}) is in the power set. Keep a clear difference between a set and its element.
Why this answer is correct
The correct answer is B. ({{2}}). ({2}) is an element of (A), so its singleton subset ({{2}}) is in the power set. Keep a clear difference between a set and its element.
Exam Tip
({2}), (A) का एक तत्व है, इसलिए उसका एकल उपसमुच्चय ({{2}}) घात समुच्चय में होगा। सेट और उसके तत्व में अंतर रखें।
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