यदि \(A=\{a,b,c,d,e\}\), तो (P(A)) के कितने अवयव (a) या (b) में से कम से कम एक को शामिल करते हैं?
If \(A=\{a,b,c,d,e\}\), how many elements of (P(A)) contain at least one of (a) or (b)?
Explanation opens after your attempt
B. (24)
Concept
There are \(2^5=32\) total subsets, and \(2^3=8\) subsets contain neither (a) nor (b). Thus (32-8=24).
Why this answer is correct
The correct answer is B. (24). There are \(2^5=32\) total subsets, and \(2^3=8\) subsets contain neither (a) nor (b). Thus (32-8=24).
Exam Tip
कुल \(2^5=32\) उपसमुच्चय हैं और (a,b) दोनों न होने वाले \(2^3=8\) हैं। इसलिए (32-8=24)।
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