यदि \(A=\{r,s,t,u,v\}\), तो (\mathcal{P}(A)) के कितने तत्व ({r,s}) के अधिसमुच्चय हैं लेकिन (v) नहीं रखते?
If \(A=\{r,s,t,u,v\}\), how many elements of (\mathcal{P}(A)) are supersets of ({r,s}) but do not contain (v)?
Explanation opens after your attempt
Correct Answer
B. (4)
Concept
(r,s) are fixed and (v) is excluded. The remaining (t,u) are free, so there are \(2^2=4\) subsets.
Why this answer is correct
The correct answer is B. (4). (r,s) are fixed and (v) is excluded. The remaining (t,u) are free, so there are \(2^2=4\) subsets.
Exam Tip
(r,s) निश्चित हैं और (v) नहीं लेना है। शेष (t,u) स्वतंत्र हैं, इसलिए \(2^2=4\) उपसमुच्चय होंगे।
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