यदि \(A\cup B=A\) है, तो कौन सा संबंध सही है?
If \(A\cup B=A\), which relation is correct?
Explanation opens after your attempt
A. \(B\subseteq A\)
Concept
If adding (B) does not change (A), then all elements of (B) are in (A). Hence \(B\subseteq A\).
Why this answer is correct
The correct answer is A. \(B\subseteq A\). If adding (B) does not change (A), then all elements of (B) are in (A). Hence \(B\subseteq A\).
Exam Tip
यदि (B) जोड़ने पर (A) नहीं बदलता, तो (B) के सभी अवयव (A) में हैं। इसलिए \(B\subseteq A\) है।
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