यदि \(A\cup B=A\) है, तो (B) के बारे में सही कथन क्या है?
If \(A\cup B=A\), which statement about (B) is correct?
Explanation opens after your attempt
A. \(B\subseteq A\)
Concept
Adding (B) to (A) by union does not change (A), so every element of (B) is in (A). Thus \(B\subseteq A\).
Why this answer is correct
The correct answer is A. \(B\subseteq A\). Adding (B) to (A) by union does not change (A), so every element of (B) is in (A). Thus \(B\subseteq A\).
Exam Tip
संघ में (B) जोड़ने पर (A) नहीं बदलता, इसलिए (B) का हर तत्व (A) में है। अतः \(B\subseteq A\)।
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