यदि \(A=\{1,2,3\}\) है तो (\mathcal{P}(A)) में खाली नहीं होने वाले उपसमुच्चयों की संख्या कितनी होगी?
If \(A=\{1,2,3\}\), how many non-empty subsets are in (\mathcal{P}(A))?
Explanation opens after your attempt
Correct Answer
B. (7)
Concept
Total subsets are \(2^3=8\) and one subset is empty. Therefore non-empty subsets are (7).
Why this answer is correct
The correct answer is B. (7). Total subsets are \(2^3=8\) and one subset is empty. Therefore non-empty subsets are (7).
Exam Tip
कुल उपसमुच्चय \(2^3=8\) हैं और खाली उपसमुच्चय एक है। इसलिए खाली नहीं उपसमुच्चय (7) हैं।
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