यदि \(U=\{10,20,30,40,50\}\), \(A=\{10,20,40\}\) और \(B=\{20,30\}\) है, तो (A-B) क्या है?
If \(U=\{10,20,30,40,50\}\), \(A=\{10,20,40\}\), and \(B=\{20,30\}\), what is (A-B)?
Explanation opens after your attempt
A. ( {10,40} )
Concept
The common element (20) is removed from (A), leaving ({10,40}). Even when (U) is given, find the difference from (A) and (B).
Why this answer is correct
The correct answer is A. ( {10,40} ). The common element (20) is removed from (A), leaving ({10,40}). Even when (U) is given, find the difference from (A) and (B).
Exam Tip
(A) से (B) का समान अवयव (20) हटता है और ({10,40}) बचता है। (U) दिए होने पर भी अंतर (A) और (B) से निकालें।
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