यदि \(A=\{1,2,3,4,5\}\), \(B=\{3,4,5,6\}\) और \(C=\{5,6,7\}\), तो \((A-B)\cup(B-C)\) क्या है?
If \(A=\{1,2,3,4,5\}\), \(B=\{3,4,5,6\}\), and \(C=\{5,6,7\}\), what is \((A-B)\cup(B-C)\)?
Explanation opens after your attempt
A. ({1,2,3,4})
Concept
(A-B={1,2}) and (B-C={3,4}). Their union is ({1,2,3,4}).
Why this answer is correct
The correct answer is A. ({1,2,3,4}). (A-B={1,2}) and (B-C={3,4}). Their union is ({1,2,3,4}).
Exam Tip
(A-B={1,2}) और (B-C={3,4}) है। इनका संघ ({1,2,3,4}) है।
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