यदि \(A=\{1,2,3,4,5,6\}\) और \(B=\{2,4,6\}\) है, तो (B-A) क्या है?
If \(A=\{1,2,3,4,5,6\}\) and \(B=\{2,4,6\}\), what is (B-A)?
Explanation opens after your attempt
C. \( \varnothing \)
Concept
Since \(B\subseteq A\), no element of (B) lies outside (A). Therefore \(B-A=\varnothing\).
Why this answer is correct
The correct answer is C. \( \varnothing \). Since \(B\subseteq A\), no element of (B) lies outside (A). Therefore \(B-A=\varnothing\).
Exam Tip
क्योंकि \(B\subseteq A\), (B) का कोई अवयव (A) के बाहर नहीं है। इसलिए \(B-A=\varnothing\) है।
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