यदि \(U=\{a,b,c,d\}\) और \(B=\{a,d\}\) है तो (B') कौन सा है?
If \(U=\{a,b,c,d\}\) and \(B=\{a,d\}\) then which is (B')?
Explanation opens after your attempt
B. ({b,c})
Concept
The complement is (U-B). After removing (a,d) the remaining elements are (b,c).
Why this answer is correct
The correct answer is B. ({b,c}). The complement is (U-B). After removing (a,d) the remaining elements are (b,c).
Exam Tip
पूरक (U-B) होता है। (a,d) हटाने पर (b,c) बचते हैं।
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