यदि \(A\cup B=B\), तो कौन सा निष्कर्ष हमेशा सही है?
If \(A\cup B=B\), which conclusion is always correct?
Explanation opens after your attempt
Correct Answer
A. \(A\subseteq B\)
Concept
The union remains (B), so (A) added no outside element. Therefore \(A\subseteq B\).
Why this answer is correct
The correct answer is A. \(A\subseteq B\). The union remains (B), so (A) added no outside element. Therefore \(A\subseteq B\).
Exam Tip
मिलन (B) ही रह गया, इसका अर्थ है (A) ने बाहर का कोई सदस्य नहीं जोड़ा। इसलिए \(A\subseteq B\) है।
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