यदि \(A=\{7,14,21\}\) है तो (7) और ({7}) में से (\mathcal{P}(A)) का तत्व कौन है?
If \(A=\{7,14,21\}\), which among (7) and ({7}) is an element of (\mathcal{P}(A))?
Explanation opens after your attempt
B. केवल ({7})only ({7})
Concept
(\mathcal{P}(A)) contains subsets and ({7}) is a subset. (7) is a direct element of (A).
Why this answer is correct
The correct answer is B. केवल ({7}) / only ({7}). (\mathcal{P}(A)) contains subsets and ({7}) is a subset. (7) is a direct element of (A).
Exam Tip
(\mathcal{P}(A)) में उपसमुच्चय होते हैं और ({7}) एक उपसमुच्चय है। (7) सीधे (A) का तत्व है।
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