यदि \(A\cup B'=U\), तो कौन सा संबंध सदैव सत्य है?
If \(A\cup B'=U\), which relation is always true?
Explanation opens after your attempt
Correct Answer
A. \(B\subseteq A\)
Concept
Taking complement of \(A\cup B'=U\) gives \(A'\cap B=\varnothing\), so \(B\subseteq A\). Taking complements makes the relation easier.
Why this answer is correct
The correct answer is A. \(B\subseteq A\). Taking complement of \(A\cup B'=U\) gives \(A'\cap B=\varnothing\), so \(B\subseteq A\). Taking complements makes the relation easier.
Exam Tip
\(A\cup B'=U\) का पूरक लेने पर \(A'\cap B=\varnothing\), इसलिए \(B\subseteq A\)। पूरक लेकर संबंध आसान हो जाता है।
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