चार सदस्यों वाले समुच्चय के उचित उपसमुच्चयों की संख्या कितनी है?
How many proper subsets does a set with four elements have?
Explanation opens after your attempt
A. (15)
Concept
Total subsets are \(2^4=16\), and removing the whole set leaves (15) proper subsets. Do not forget to subtract the set itself.
Why this answer is correct
The correct answer is A. (15). Total subsets are \(2^4=16\), and removing the whole set leaves (15) proper subsets. Do not forget to subtract the set itself.
Exam Tip
कुल उपसमुच्चय \(2^4=16\) हैं और पूरा सेट हटाने पर (15) उचित उपसमुच्चय बचते हैं। अंतिम उत्तर में पूरा सेट घटाना न भूलें।
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