यदि \(A\cup B=A\) है, तो \(B\setminus A\) क्या होगा?
If \(A\cup B=A\), then what is \(B\setminus A\)?
Explanation opens after your attempt
Correct Answer
A. \(\varnothing\)
Concept
From \(A\cup B=A\), we get \(B\subseteq A\). Thus (B) has no element outside (A).
Why this answer is correct
The correct answer is A. \(\varnothing\). From \(A\cup B=A\), we get \(B\subseteq A\). Thus (B) has no element outside (A).
Exam Tip
\(A\cup B=A\) से \(B\subseteq A\) मिलता है। इसलिए (B) में (A) के बाहर कोई तत्व नहीं है।
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