यदि \(A=\{1,2,3,4\}\) है, तो (\mathcal{P}(A)) में (A) को छोड़कर कितने members होंगे?
If \(A=\{1,2,3,4\}\), how many members are there in (\mathcal{P}(A)) excluding (A) itself?
Explanation opens after your attempt
B. (15)
Concept
(\mathcal{P}(A)) has \(2^4=16\) members. Excluding (A) itself leaves (16-1=15).
Why this answer is correct
The correct answer is B. (15). (\mathcal{P}(A)) has \(2^4=16\) members. Excluding (A) itself leaves (16-1=15).
Exam Tip
(\mathcal{P}(A)) में \(2^4=16\) members हैं। (A) को हटाने पर (16-1=15) बचेंगे।
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