यदि \(A=\{1,2,3\}\) है तो (A) के सभी उचित उपसमुच्चयों की संख्या क्या है?
If \(A=\{1,2,3\}\), what is the number of all proper subsets of (A)?
Explanation opens after your attempt
B. (7)
Concept
A three element set has \(2^3=8\) total subsets. Removing the whole set (A) gives (7) proper subsets.
Why this answer is correct
The correct answer is B. (7). A three element set has \(2^3=8\) total subsets. Removing the whole set (A) gives (7) proper subsets.
Exam Tip
तीन अवयवों के कुल उपसमुच्चय \(2^3=8\) हैं। उचित उपसमुच्चय में पूरा (A) हटाने पर (7) बचते हैं।
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